Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 71, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 29, 2015, 3:26 PM PDT for San Bernardino County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 29, 2015, 3:26 PM PDT (22:26 UTC)
- Expired
- Jul 29, 2015, 6:30 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 22:29 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.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 10.4 hours before the alert went out and 130 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3787 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
259
WGUS55 KVEF 292226
FFWVEF
CAC071-300130-
/O.NEW.KVEF.FF.W.0071.150729T2226Z-150730T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
326 PM PDT WED JUL 29 2015
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 630 PM PDT
* AT 324 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL SAN BERNARDINO
COUNTY. THE STORM IS NEARLY STATIONARY. FLASH FLOODING IS EXPECTED
TO BEGIN SHORTLY AND IS EXPECTED TO IMPACT KELBACKER ROAD.
* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF CENTRAL SAN
BERNARDINO COUNTY AND KELBACKER ROAD SOUTHEAST OF BAKER.
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.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3530 11565 3517 11563 3509 11580 3523 11593
$$
JS2 follow-up statements
639 WGUS75 KVEF 292358 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 458 PM PDT WED JUL 29 2015 CAC071-300130- /O.CON.KVEF.FF.W.0071.000000T0000Z-150730T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 458 PM PDT WED JUL 29 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM PDT FOR CENTRAL SAN BERNARDINO COUNTY... AT 453 PM PDT...HEAVY RAIN FROM EARLIER THUNDERSTORMS SOUTHEAST OF BAKER WILL CONTINUE TO FLOW THROUGH WASHES TOWARDS KELBAKER ROAD THROUGH 630 PM. FLASH FLOODING REMAINS POSSIBLE OVER PORTIONS OF KELBAKER ROAD AND OTHER RURAL AREAS OF CENTRAL SAN BERNARDINO COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA FACEBOOK OR TWITTER. TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3530 11565 3517 11563 3509 11580 3523 11593 $$ JS
216 WGUS75 KVEF 300129 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 629 PM PDT WED JUL 29 2015 CAC071-300137- /O.EXP.KVEF.FF.W.0071.000000T0000Z-150730T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 629 PM PDT WED JUL 29 2015 ...THE FLASH FLOOD WARNING FOR CENTRAL SAN BERNARDINO COUNTY WILL EXPIRE AT 630 PM PDT... THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. HOWEVER...ANYONE TRAVELING ALONG KELBAKER ROAD SHOULD USE CAUTION AND WATCH FOR PONDING WATER IN LOW WATER AREAS OF THE ROADWAY. LAT...LON 3530 11565 3517 11563 3509 11580 3523 11593 $$ JS
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 1:37 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 29, 2:50 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Jul 29, 2:53 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 29, 4:44 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
| Jul 29, 4:50 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 25 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.