OPINION
Defendant/appellant Kari Henrie appeals her convictions for leaving the scene of an accident, in violation of Utah Code Ann. § 41-6-30 (1993), and driving under the influence of alcohol, in violation of Utah Code Ann. § 41-6-44 (1993). 1 She claims the trial court erred in denying her motion to suppress evidence gathered at her home. We affirm.
FACTS
At approximately 6:00 p.m. on January 1, 1993, a two-ear accident occurred in Orem, Utah. One of the cars, a full-size, older-model, brown Buick, was observed leaving the scene of the accident. An officer dispatched to the scene obtained a description of the car, including the license plate number, and radioed a request for other units to search for the missing autоmobile. At approximately 6:15 p.m., Officer Steele located a car matching the description at a fourplex apartment near the scene of the accident. The ear had front-end damage consistent with the accident. In addition, it was parked at an extreme angle, and the door on the driver’s side was ajar. A strong odor of alcohol emanated from the car.
Officer Steele attempted to locate the owner of the car. As he approached the four-plex, he noticed that “the door on the bottom left [apartment] that had the lights out was closing slowly.” He then went upstairs to an illuminated apartment, where he learned from its occupant that defendant owned the ear and lived in the darkened apartment where he had seen the door closing. He knocked several times on the outer screen door of defendant’s apartment but received no response. As he was turning away from the door, Officer Steele found defendant’s purse on the stairs.
Officer Steele was then joined by Officer Jackson, and together they returned to defendant’s front door. Officer Jackson reached through a hole in the screen and knocked hard on the inner wooden door, hoping to elicit a response. Instead, the door swung open one to two feet, and the officers observed keys in the doorknob. Both officers testified they had not previously notiсed that the door was ajar or that the keys were in the doorknob.
At this point, the testimony of the officers varies. Officer Steele testified that he shined his flashlight into the apartment when the door swung open. However, on cross-examination he admitted that he might have first pushed the door open further. Officer Jackson testified that Officer Steele pushed the door open further and then shined his flashlight into the darkened apartment. 2
The officers noticed defendant on her bed in the rear of the apartment. Officer Steele called out “Kari” and defendant stood up and said, “Yes.” He asked if they could talk to *1386 her. She said “okay” and approached them, staggering as she walked. The officers opеned the screen door and entered one to three feet into the apartment. All three then went outside, where the officers described the car accident to defendant and administered field sobriety tests to her. A third officer joined them and observed the administration of the tests; he then took defendant to the police station, advised her of her Miranda rights, and attempted to administer an intoxilyzer test. After three unsuccessful attempts, defendant’s inability to complete the test was recorded as a refusal.
Defendant was charged with driving under the influence of alcohol and leaving the scene of an accident. She moved to suppress all evidence obtained as a result of the warrant-less entry into her home. 3 The trial court denied the motion, and' the case then proceeded to a bench trial, where defendant was found guilty on both counts. The trial court sentenced her to the statutory maximum for each offense. Subsequently, the court granted a certificate of probable cause and stayed imposition of defendant’s sentence pending appeal to this court.
Defendant appeals from her convictions, claiming the trial court erred in denying her motion to suppress because an unlawful search occurred when the police entered her home without a warrant and without exigent circumstances to support the entry. The City responds that there was no sеarch, that defendant consented to the officers’ entry into her home, and that even if a search occurred, it was justified by exigent circumstances. We address in detail only the issue of exigent circumstances as we affirm on that basis.
STANDARD OF REVIEW
This court previously characterized the determination of exigent circumstances as a question of fact, “which should not be disturbed on appeal unless clearly erroneous.”
State v. Monk,
Since
Thurman,
we have applied the bifurcated approach to a determination of exigent circumstances.
State v. Beavers,
In the instant case, the facts relevant to the exigent circumstances determination are undisputed. We thus review for correctness the trial court’s conclusion that exigent circumstances justified the warrantless search.
I. EXISTENCE OF SEARCH
As a threshold matter, the City argues that no search occurred. Our review of the record, however, reveals that at the suppression hearing, the City expressly conceded that a search occurred. The following colloquy illustrates this concession:
*1387 THE COURT: And shining the light was a search? -
MR. PETRO [counsel for defendant]: Yes. THE COURT: Do you disagree?
MR. STEPHENS [counsel for the City]: We’d at least concede that shining the light
would be a search_
THE COURT: So we’re not going to be asked to define if that was a search? The parties agree that it was.
Based upon this concession, the trial court procеeded to consider the issues of probable cause and exigent circumstances.
The City cannot on appeal circumvent its earlier concession. “[A]n appellate court normally will not consider issues, even constitutional ones, that have not been presented first to the trial court for its consideration and resolution.”
State v. Webb,
In the instant case, the trial court relied upon the concession that a search occurred when the officer shined his flashlight into defendant’s apartment. Thus the court had no occasion to consider the issue. Accordingly, we will not treat this issue for the first time on appeal.
State v. Rangel,
II. PROPRIETY OF WARRANTLESS SEARCH
A. Utah Constitution
Defendant argues that the warrantless search violated both the Fourth Amendment of the United States Constitution and Article I, Section 14 of the Utah Constitution. In her brief, she highlights the recent trend among state courts grounding their search and seizure analyses on state constitutional provisions, which may afford greater protections than their federal counterpart.
See, e.g., State v. Larocco,
B. Fourth Amendment
Under the Fourth Amendment, we employ a strong preference in favor of warrants, particularly when a person’s residence is involved. Indeed, “ ‘physical entry of the home is the chief evil against which the ... Fourth Amendment is directed.’ ”
Welsh v. Wisconsin,
However, the presumption against warrantless searches is not without its excep
*1388
tions, which are “ ‘jealously and carefully drawn.’ ”
State v. Ashe,
C. Exigent Circumstances
This court has defined exigent circumstances
7
as those “ ‘that would cause a reasonable person to believe that entry ... was necessary to prevent physical harm to the officers or other persons, the destruction of relevant evidence, the escape of the suspect, or some other consequence improperly frustrating legitimate law enforcement efforts.’ ”
State v. Beavers,
sufficient. Our task is to review the totality of facts and circumstances of the particular case to determine if the finding of exigency was proper.”
State v. Ashe,
At the suppression hearing, the City argued that two exigent circumstances existed: the potential destruction of blood alcohol evidence and safety. The trial court found the latter basis lacking and therefore grounded its conclusion of exigency solely upon the possible loss of evidence. Accepting the trial court’s determination, the City advances on appeal only the destruction of evidence branch of exigent circumstances. Thus, we consider only whether the possible destruction of evidence of defendant’s alcohol content under the facts and circumstances presented was an exigent circumstance justifying this warrantless home search.
This court has recognized that the possible destruction of blood alcohol evidence can constitute an exigent circumstance.
In re I., R.L.,
Both federal and state courts have considered whether the possible destruction of
*1389
blood alcohol evidence is an exigent circumstance. Most have concluded that it may constitute an exigent circumstance under the facts of a particular case. In
Schmerber v. California,
However, where investigations of alcohol-related offenses involve a search or arrest in a defendant’s home, courts have been more reluctant to find exigent circumstances, particularly if the alcohol-related offense is minor. The Supreme Court considered this situation in
Welsh v. Wisconsin,
A key factor in the
Welsh
Court’s analysis was the fact that Wisconsin characterized driving under the influence as a “noncriminal, civil forfeiture offense for which no imprisonment [was] possible.”
Id.
at-754,
Id.
at 750,
Following
Welsh,
the Eighth Circuit Court of Appeals declined to recognize the need to preserve evidence of blood alcohol level as sufficiently exigent to justify a warrantless home arrest.
Patzner v. Burkett,
*1390 He moved to suppress the evidence obtained on the basis that his arrest was unconstitutional. The trial court agreed, concluding that the state had not proven either exigent circumstances or consent. Id. at 1365-66.
The defendant in Patzner then brought a civil rights action under 42 U.S.C. § 1983. The Eighth Circuit agreed that the warrant-less home arrest was not supported by exigent circumstances. Id. at 1368. Relying on Welsh, the court reasoned that Patzner’s case was
factually indistinguishable from Welsh except that ... North Dakota classified this offense as a misdemeanor with a minimum sentence of a one hundred dollar fine or three days in jail.... [T]his differеnce in penalty suggests a stronger state interest in effecting the arrest than the Wisconsin legislature expressed by punishing the same conduct with only civil sanctions. In our view, the minor difference in penalty is not sufficient to support a result different from that reached in Welsh.
Id.
This court has considered the gravity of the offense in a slightly different context: whether a warrantless home search may be justified by the exigent circumstance of hot pursuit when the underlying offense is a misdemeanor.
State v. Ramirez,
Several of our sistеr states have considered whether the destruction of blood alcohol evidence may constitute an exigent circumstance sufficient to justify a warrantless arrest or search at the defendant’s home.
9
For example, the Minnesota Supreme Court concluded that officers acted appropriately in entering a home without a warrant in part because “they needed to act as quickly as possible to precisely ascertain defendant’s blood alcohol level before the evidence dissi-patedi”
State v. Storvick,
Among the factors the Storvick court found persuasive in its exigent circumstances determination were: The officers had probable cause to believe a felony had been committed; the investigation began “immediately *1391 ■after the accident, and was an ongoing and continuing field investigation up to the point of arrest”; the police officers were cautious, were prudent, and conducted a “model investigation”; the officers had reason to believe that the defendant was inside the house, although he did not respond to knocking; the defendant had fled the scene of the accident; and the officers had an objectivе basis for believing the defendant was drinking and for acting promptly to obtain evidence of that drinking before it disappeared. Id. at 59-60.
The West Virginia Supreme Court of Appeals has also addressed this issue. In
Bennett v. Coffman,
The Bennett court recognized the need to obtain blood alcohol evidence “as soon aá [the defendant] could be apprehended, so that he could not metabolize the evidence of his crime.” Id. at 469. The court noted its concern that the defendant, in eluding the police for an hour, might have metabolized a great deal of alcohol through the exertion or might have ingested more alcohol in his home, supporting a later claim that the post-offense consumption of alcohol Caused the chemical test result. Id. Moreover, in distinguishing the case from Welsh, the court focused on two factors: that a continuous investigation was in progress, and that the offense of driving while intoxicated, a misdemeanor, “imposed upon first offenders a mandatory term of imprisonment, and exposed first time drunk drivers to up to six months in jail.” Id. at 470.
Professor LaFave, in discussing blood alcohol preservation cases, has emphasized the distinction between “planned” arrests and those made in the course of an ongoing field investigation. 2 Wayne R. LaFave, Search and Seizure § 6.1(f), at 600 (2d ed. 1987). The Connecticut Supreme Court stressed LaFave’s analysis in
State v. Guertin,
[LaFave] defines a “planned” arrest as “one which is made after a criminal investigation has been fully completed at another location and the police make a deliberate decision to go to a certain place, either the arrestee’s home or some other premises where he [or she] is believed to be, in order to take him [or her] into custody.” In the “planned” arrest situation he suggests that any claimed exigent circumstances which may arise thereafter are foreseeable and therefore would not justify a warrantless entry unless the exigent circumstances are present before the police go into the field to make the arrest. On the other hand, he would not fault the police for not having an arrest warrant when the occasion for an arrest arises while the police are already out in the field investigating the prior or ongoing conduct which is the basis for the arrest.
Id. at 969. Applying LaFave’s distinction, the Guertin court concluded that while the facts arguably presented a planned arrest, because there was no evidence that the police created the later emergency, their belief that the suspect might flee unless they moved quickly was reasonable. Id. at 969-70.
Courts have emphasized that the analysis requires an objective determination; that is, “[w]hile ‘exigent circumstances’ have multiple characteristics, the guiding principle is reasonableness, and each case must be examined in the light of facts known to officers at the time they acted.”
State v. Hert,
Taken together, thеse cases suggest a fluid totality of the circumstances approach
*1392
to exigency as previously adopted in Utah.
Ashe,
We begin our analysis of the case at bar with the gravity of the offense factor central to the
Welsh
holding. Defendant advances the theory that the оffenses for which she was convicted are “minor” and thus that the warrantless entry into her home was per se unreasonable. In Utah, driving under the influence of alcohol is a misdemeanor punishable by imprisonment and a monetary fine. Utah Code Ann. § 41-6-44 (1993). Those punishments increase with each successive conviction.
Id. A
fourth or subsequent conviction is treated as a third degree felony.
Id.
§ 41-6-44(7)(a). In contrast, the Wisconsin statutory scheme at issue in
Welsh
provided that a first offense was “a noncriminal violation subject to a civil forfeiture proceeding for a maximum fine of $200; a second or subsequent offense in the previous five years was a potential misdemeanor that could be punished by imprisonment for up to one yeаr and a maximum fine of $500.”
Welsh,
This marked difference in statutory penalties and classifications signifies the divergent views of the Utah and Wisconsin legislatures regarding the severity of the drunk driving offense. We are thus persuaded that Welsh is not dispositive because the Utah legislature has classified the offense as criminal and has imposed more punitive penalties.
We now consider the other factors that courts have found relevant to this determination. Nothing in the record indicates any basis for the officers to fear for their own safety. Probable cause was conceded; nonetheless, heeding.the warning that more than minimal probable cause is required,
see Dor-man v. United States,
The оfficers had a reasonable belief that defendant was in the premises entered. Officer Steele testified he identified defendant as the owner of the car, learned the location of her apartment from a neighbor, discovered her purse on the stairs immediately outside the apartment, and observed the door to the apartment slowly closing as if someone had just entered. Furthermore, there is no suggestion that the officers acted in anything other than a reasonable and peaceable manner. The worst that can be said is that they knocked loudly; the act of pushing the already open door is not the type of forcible entry, such as breaking down a door, with which courts are customarily concerned in search and seizure eases. In addition, the police identified themselves and explained the nature of their entry shortly thereafter. Finally, the entry occurred only after defendant had agreed to talk with the officers.
Defendant asserts in her brief that the police could have obtained a telephonic warrant “in minutes” and therefore should have done so. Defense counsel at trial argued that when a test is taken within two hours of an accident, “the blood alcohol level at the time of the test is the same as the blood alcohol level when driving,” citing Utah Code Ann. § 41-6-44(l)(a)(i) (1993) in support of *1393 this proposition. By so arguing, counsel apparently meant to suggest that the police were required to exhaust the two hours in procuring a warrant. 10
Looking to the facts, we note the accident occurred at approximately 6:00 p.m. Defendant was apprehended within fifteen to thirty minutes of the accident, and the police attempted to ascertain her blood alcohol level approximately one hour after the accident occurred. While it is true that the police could have sought a telephonic warrant within that first hour, the officers were engaged in a continuous and ongoing search for defendant, who had left the scene of an accident moments earlier.
See Guerbin,
As noted previously, at the core of this inquiry is the requirement that the police conduct be objectively reasonable in light of the attendant circumstances. In the instant case, the officers in question reasonably believed that an alcohol-related offense had occurred on the basis of their observations prior to meeting defendant. They conducted a model investigation, quickly locating the vehicle involved in the acсident, identifying defendant as its owner, and locating defendant. The reasonableness of the officers’ behavior weighs in favor of a conclusion of exigency.
We are also influenced by the fact that defendant fled the scene of the accident, thereby committing a separate crime. By so doing, she gained the advantage of being in her residence, where greater constitutional protection is afforded.
Beavers,
Finally, we recognize an additional policy reason that influences our analysis — the possible corruption of blood alcohol evidence. The City points out that requiring a search warrant in a case such as this would create a substantial likelihood of tampering with the evidence as well as claims of such tampering. A suspect may return home and consume or claim to have consumed more alcohol, inviting the assertion that a blood or breath alcohol level above the statutory threshold was caused by post-offense alcohol consumption.
See Bennett,
In sum, we hold that the trial court correctly concluded that exigent cirсumstances justified the warrantless search of defendant’s home. The police were properly concerned about the dissipation of blood alcohol and the possible loss or corruption of that evidence; time is critical in obtaining evidence of blood or breath alcohol level; the offense in question was serious in nature, punishable by incarceration and a fine; the police acted reasonably and conducted a model, continuous, and ongoing investigation; and the only reason that this issue has been framed as a warrantless home search is the commission of another offense, fleeing the scene of an accident, which should not inure to defendant’s bеnefit.
Our decision today should not be read as a blanket rule sanctioning warrantless home searches whenever evidence is needed in a drunk driving investigation, nor is the list of circumstances considered in this case *1394 intended to be exhaustive or exclusive. We hold only that warrantless searches of homes may under certain circumstances be appropriate in investigations of alcohol-related offenses. We caution trial courts to consider carefully all of the attendant circumstances in individual cases before concluding that exigent circumstances exist, always mindful of the heavy burden the government must bear in overcoming the presumption of unreasonableness associated with wаrrantless home searches. The trial court did so in this ease and correctly concluded that in light of the attendant facts and circumstances, the exigency requirement was met.
CONCLUSION
The City conceded that a search occurred, and defendant conceded the existence of probable cause. The trial court correctly concluded from the totality of circumstances present in this case that the exigency requirement was met. The warrantless search of defendant’s home was therefore permissible, and the trial court properly denied defendant’s motion to suppress. Accordingly, we affirm her convictions.
Notes
. The City of Orem has adopted both of these sections, which can be found at section 19-1-1 of the Orem City Code.
. This variance is ultimately irrelevant in light of the City’s concession, discussed below, that a search occurred when Officer Steele shined his flashlight into defendant’s apartment.
. At oral argument, counsel for defendant clarified that "all evidence” means everything obtained as a result of the search of defendant’s home and person, including the officers’ observations, field sobriety tests, intoxilyzer refusal, and statements defendant made to the police.
. We also applied a correction of error standard in
State v. Shoulderblade,
. The City also argues for the first time on appeal that defendant consented to the search. However, the City conceded that a search occurred when the officer shined his flashlight into defendant’s apartment, which took place
prior to
defendant’s alleged consent. Therefore, we need not reach the issue of consent because defendant undeniably did not consent to the flashlight search. Furthermore, the City does not claim, assuming the original search was unlawful, that the evidence subsequently obtained by a consent search was sufficiently attenuated to purge the taint of the allegedly illegal search.
See State v. Arroyo,
. At the hearing on the motion to suppress, although defense counsеl initially challenged the finding of probable cause, he ultimately conceded its existence. Specifically, the following • exchange occurred:
THE COURT: Doesn’t that seem probable that the driver of that vehicle involved in that accident was secreting themself in that apartment? Isn't that a straightforward conclusion?
MR. PETRO [counsel for defendant]: I’d say that’s a straightforward conclusion.
THE COURT: So that limits itself to if there are exigent circumstances which allow an entry without a warrant?
MR. PETRO: Correct.
. The trial court made no written factual findings supporting its conclusion that exigent circumstances existed. Normally, when factual issues are involved in deciding a motion to suppress, trial- courts are required to make detailed findings sufficient to еnable appellate courts to adequately review the trial court's decision.
State v. Marshall,
. Similarly, some courts have upheld warrantless misdemeanor arrests on a defendant’s property, without entry into a residence, based on the exigent circumstance of the destruction of blood alcohol evidence.
See State v. Ellinger,
. Defendant mistakenly relies upon two cases that she claims reach the same result as
Welsh.
First, she cites
State v. Geisler,
. A more compelling interpretation of the statutory scheme is that it evinces the Legislature's intent to promote the rapid attainment of chemical tests for alcohol content, as indicated by the provision that tests given more than two hours after an incident may be afforded different weight, presumably less, than those administered within two hours.
See
Utah Code Ann. §§ 41-6-44(l)(a)(i), -44.5(2) (1993);
see also State v. Mil-ligan,
