Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 41, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 6, 2015, 6:47 PM PDT for San Bernardino County, California. 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
- Jul 6, 2015, 6:47 PM PDT (01:47 UTC)
- Expired
- Jul 6, 2015, 9:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 93 km from the middle of the area, began a volume at 01:51 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 6, 8:00 PM PDT | FLASH FLOOD | 10 Wsw Mohave Valley, CA | CALIFORNIA HIGHWAY PATROL REPORTED BOULDERS, DEBRIS AND WATER IN THE ROADWAY ALONG WITH POTHOLES. THE EVENT TIME IS AN ESTIMATE. |
| Jul 6, 8:00 PM PDT | FLASH FLOOD | 9 Wnw Needles, CA | CALIFORNIA HIGHWAY PATROL REPORTED BOULDERS, DEBRIS AND WATER IN THE ROADWAY ALONG WITH POTHOLES. THE EVENT TIME IS AN ESTIMATE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 00:00Z, 1.8 hours before the alert went out and 181 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
- 349 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 2961 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
059
WGUS55 KVEF 070147
FFWVEF
CAC071-070445-
/O.NEW.KVEF.FF.W.0041.150707T0147Z-150707T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
647 PM PDT MON JUL 6 2015
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 945 PM PDT
* AT 646 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN OVER HIGHWAY 95 AND I-40. THE STORM IS NEARLY
STATIONARY. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY IN THE
WARNED AREA.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES AND HIGHWAY 95 AND I-40.
THIS INCLUDES INTERSTATE 40 IN CALIFORNIA BETWEEN MILE MARKERS 120
AND 140.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON ROADS...IN NORMALLY DRY WASHES AND LOW
LYING AREAS. 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 3480 11463 3477 11498 3496 11501 3501 11466
$$
PULLIN2 follow-up statements
099 WGUS75 KVEF 070307 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 807 PM PDT MON JUL 6 2015 CAC071-070445- /O.CON.KVEF.FF.W.0041.000000T0000Z-150707T0445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 807 PM PDT MON JUL 6 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM PDT FOR EAST CENTRAL SAN BERNARDINO COUNTY... AT 806 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS HAVE DIMINISHED ACROSS THE WARNED AREA. FLASH FLOODING FROM EXCESSIVE RUNOFF REMAINS A THREAT. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... NEEDLES AND HIGHWAY 95 AND I-40. THIS INCLUDES INTERSTATE 40 IN CALIFORNIA BETWEEN MILE MARKERS 120 AND 140. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3480 11463 3477 11498 3496 11501 3501 11466 $$ PULLIN
544 WGUS75 KVEF 070343 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 843 PM PDT MON JUL 6 2015 CAC071-070352- /O.CAN.KVEF.FF.W.0041.000000T0000Z-150707T0445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 843 PM PDT MON JUL 6 2015 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL SAN BERNARDINO COUNTY IS CANCELLED... THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT IN THIS AREA. LAT...LON 3480 11463 3477 11498 3496 11501 3501 11466 $$ PULLIN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:09 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 6, 6:21 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 6, 7:37 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 6, 8:54 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 7, 2:52 AM PDT | Flash Flood Watch | VEF | Inyo | 17 hr |
| Jul 7, 1:11 PM PDT | Areal Flood Advisory | VEF | Inyo | 4 hr |
| Jul 7, 2:23 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 7, 3:07 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 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.