Alert archive / Arizona / Flash Flood Warnings in 2026
Flash Flood Warning 37, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 30, 2026, 7:21 PM MST for Mohave County, Arizona. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 30, 2026, 7:21 PM MST (02:21 UTC)
- Expired
- Aug 30, 2026, 10:15 PM MST
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 126 km from the middle of the area, began a volume at 02:24 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 7:38 PM MST | RAIN 1.89 | 7 Ne Desert Hills, AZ | Ram Peak station on the Mohave County Flood Control District ALERT system. The period of the rain event was 43 minutes. |
| Aug 30, 7:44 PM MST | RAIN 1.42 | 6 Ne Desert Hills, AZ | Catsaurus station on the Mohave County Flood Control District ALERT System. The period of the rain event was 45 minutes. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 2.4 hours before the alert went out and 230 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1713 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted.
051
WGUS55 KVEF 310221
FFWVEF
AZC015-310515-
/O.NEW.KVEF.FF.W.0037.260831T0221Z-260831T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
721 PM PDT Sun Aug 30 2026
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
South Central Mohave County in northwestern Arizona...
* Until 1015 PM MST.
* At 721 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 1.5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Havasu Heights and Yucca.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3463 11437 3454 11427 3478 11393 3487 11415
3474 11433
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MW2 follow-up statements
097
WGUS75 KVEF 310311
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
811 PM PDT Sun Aug 30 2026
AZC015-310515-
/O.CON.KVEF.FF.W.0037.000000T0000Z-260831T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
811 PM MST Sun Aug 30 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM MST THIS
EVENING FOR SOUTH CENTRAL MOHAVE COUNTY...
At 811 PM MST, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to 2.5 inches of rain have fallen.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Havasu Heights and Yucca.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3463 11437 3454 11427 3478 11393 3487 11415
3474 11433
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MW725
WGUS75 KVEF 310507
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1007 PM PDT Sun Aug 30 2026
AZC015-310517-
/O.EXP.KVEF.FF.W.0037.000000T0000Z-260831T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
1007 PM MST Sun Aug 30 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 1015 PM MST THIS EVENING FOR
SOUTH CENTRAL MOHAVE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3474 11433 3487 11415 3478 11393 3454 11427
3463 11437
$$
MeltzerWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Aug 30, 3:58 PM MST, 3 hours 23 minutes earlier. Its key messages:
- Generally cooler and drier conditions expected this week, though isolated-to-scattered thunderstorms are possible today and Monday in our eastern zones.
Area forecast discussion, Aug 30, 3:58 PM MST, 3 hours 23 minutes before
Area Forecast Discussion National Weather Service Las Vegas NV 358 PM PDT Sun Aug 30 2026 .KEY MESSAGES... - Generally cooler and drier conditions expected this week, though isolated-to-scattered thunderstorms are possible today and Monday in our eastern zones. && .DISCUSSION...Today through Saturday. The Four Corners area of high pressure that brought extreme temperatures and isolated showers and thunderstorms to the region last week has shifted eastward thanks to troughing over the western United States. There remains 0.75 - 1.00 inches of PWAT over the region, with greater values in our eastern zones including Mohave County and eastern Lincoln County. As a result, with daytime heating, there is a 20 percent chance of isolated showers and thunderstorms over eastern Mohave County this afternoon, with greater chances further east. Some high-resolution convective allowing models continue to show a complex forming over La Pax and Yavapai counties this evening, with a corresponding outflow boundary pushing into the Mojave Desert. Should this come to fruition, the outflow boundary will bring a moisture flux as well as 250-500 J/kg of CAPE along with it, which will return chances of shower and thunderstorm development over Mohave, eastern San Bernardino, and eastern Clark counties tonight in addition to gusty winds. Monday afternoon, chances of showers and thunderstorms return, as moisture remains over the region and a shortwave pushes into the southern Great Basin. Forecast HRRR soundings show over 2500 J/kg of CAPE over Mohave County Monday afternoon, with SPC Excessive Rainfall Outlook highlighting the county with a "Slight" and areas further north with a "Moderate". Tuesday onward, moisture is scoured out of the region thanks to dry southwest flow aloft. The aforementioned troughing over the region will allow temperatures to drop below- normal for early September with gusty southwesterly afternoons. && .AVIATION...For Harry Reid...For the 00Z Forecast Package...Breezy southwesterly winds will continue into the early evening, with occasional gusts to 25 knots likely through sunset. South to southwest winds will persist overnight, although the gustiness should subside by late evening. Similar wind patterns are expected Monday, except the southerly gusts may begin earlier around 16Z. VFR conditions will prevail through Monday with any cloud bases remaining 12kft AGL or higher. Convection through the remainder of the afternoon will remain well east of the terminal area over northwest Arizona. Greater convective coverage is expected Monday, but once again the majority should remain east of the terminal area and mainly affect approaches from the east. Temperatures should remain below 100F through at least midweek. For the rest of southern Nevada, northwest Arizona and southeast California...For the 00Z Forecast Package...Outside of the western Mojave Desert, where winds will favor a more westerly direction through Monday, southerly to southwesterly winds will continue across the region into this evening. Wind gusts of 20 to 30 knots will be common through sunset, with lighter winds developing thereafter. VFR conditions will persist through the TAF period with FEW to SCT high clouds AOA 10kft AGL passing across the region. A few isolated thunderstorms will continue over far eastern portions of the region into this evening, but no convection is expected to directly impact area terminals. An increase in convection is likely Monday, but once again most of the activity will be over western Arizona and not directly impact area terminals. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION...Soulat AVIATION...Planz For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 6:47 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 30, 7:17 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 43 min |
| Aug 30, 8:39 PM MST | Flood Watch | VEF | Mohave | 27 hr |
| Aug 31, 9:13 AM MST | Severe Thunderstorm Warning | VEF | Mohave | 32 min |
| Aug 31, 9:50 AM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 31, 10:43 AM MST | Severe Thunderstorm Warning | VEF | Mohave | 47 min |
| Aug 31, 11:26 AM MST | Severe Thunderstorm Warning | VEF | Mohave | 49 min |
Nearby
Flash Flood Warnings in Arizona, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.