Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 79, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 30, 2015, 2:29 PM PDT for San Bernardino County, California; Mohave County, Arizona. It was in force for 3 hr. 3 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
- Jul 30, 2015, 2:29 PM PDT (21:29 UTC)
- Expired
- Jul 30, 2015, 5:30 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mohave County, AZ, San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 162 km from the middle of the area, began a volume at 21:30 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 |
|---|---|---|---|
| Jul 30, 3:15 PM PDT | HEAVY RAIN 0.1 | 1 W Lake Havasu City, AZ | *** 1 INJ *** A WEATHER-RELATED VEHICLE ACCIDENT TOOK PLACE NEAR MCCOLLOCH BOULEVARD AND CAPRIS BOULEVARD INJURING AT LEAST 1 PERSON. THE EVENT TIME IS AN ESTIMATE. |
| Jul 30, 3:15 PM PDT | HEAVY RAIN 0.1 | 1 Wsw Lake Havasu City, AZ | *** 1 INJ *** A WEATHER-RELATED VEHICLE ACCIDENT TOOK PLACE NEAR MCCOLLOCH BOULEVARD AND CAPRIS BOULEVARD INJURING AT LEAST 1 PERSON. THE EVENT TIME IS AN ESTIMATE. |
| Jul 30, 4:53 PM PDT | FLASH FLOOD | 2 S Lake Havasu City, AZ | 6 INCHES OF WATER OVER THE ROADWAY AT JAMAICA BLVD S. AND LAKE HAVASU AVE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 9.5 hours before the alert went out and 234 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
- 22 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 1918 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
676
WGUS55 KVEF 302129
FFWVEF
AZC015-CAC071-310030-
/O.NEW.KVEF.FF.W.0079.150730T2129Z-150731T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
229 PM PDT THU JUL 30 2015
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN MOHAVE COUNTY IN NORTHWESTERN ARIZONA...
EASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 530 PM PDT/530 PM MST/
* AT 225 PM PDT /225 PM MST/...DOPPLER RADAR AND AUTOMATED RAIN
GAUGES INDICATED THUNDERSTORMS PRODUCING ALONG A LINE FROM NEAR
YUCCA TOWARDS THE PARKER DAM. THESE STORMS ARE DRIFTING SOUTHWEST
AND WILL IMPACT THE LAKR HAVASU AREA WITHIN THE HOUR.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAKE HAVASU CITY...PARKER DAM...THREE DUNES CAMPGROUND...EARP...
CATTAIL COVE STATE PARK...DESERT HILLS AND BLACK MEADOW LANDING
CAMPGROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.
&&
LAT...LON 3435 11452 3469 11455 3471 11419 3463 11418
3425 11401 3430 11409 3430 11414 3426 11413
3426 11416 3419 11423 3417 11429 3414 11432
3414 11434
$$
OUTLER1 follow-up statement
839
WGUS75 KVEF 310021
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
521 PM PDT THU JUL 30 2015
AZC015-CAC071-310030-
/O.EXP.KVEF.FF.W.0079.000000T0000Z-150731T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-
521 PM PDT THU JUL 30 2015
...THE FLASH FLOOD WARNING FOR SOUTHWESTERN MOHAVE AND EASTERN SAN
BERNARDINO COUNTIES WILL EXPIRE AT 530 PM PDT...
THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO
POSE A THREAT. SOME FLASH FLOODING EARLIER TODAY HAS RESULTED IN
LOCAL ROAD CLOSURES BUT IMPROVING CONDITIONS ARE EXPECTED THROUGH
THE EVENING.
LAT...LON 3435 11452 3469 11455 3471 11419 3463 11418
3425 11401 3430 11409 3430 11414 3426 11413
3426 11416 3419 11423 3417 11429 3414 11432
3414 11434
$$
OUTLERThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 5:03 PM PDT | Dust Storm Warning | VEF | San Bernardino | 3 hr |
| Jul 29, 5:06 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 29, 5:49 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 41 min |
| Jul 29, 6:11 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 29, 6:26 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 29, 7:27 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 29, 8:30 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 24 hr |
| Jul 30, 1:13 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 30, 3:02 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 58 min |
| Jul 30, 3:20 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| Jul 30, 3:28 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 30, 4:29 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 30, 1:46 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
Nearby
Flash Flood Warnings in California, 2015Flash Flood Warnings in Arizona, 2015Every flash flood warning in 2015
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.