Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 18, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 13, 2012, 9:39 PM PDT for San Bernardino County, California. It was in force for 81 min. 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 13, 2012, 9:39 PM PDT (04:39 UTC)
- Expired
- Jul 13, 2012, 11:00 PM PDT
- In force
- 81 min
- 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), 162 km from the middle of the area, began a volume at 04:42 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 00:00Z, 4.7 hours before the alert went out and 247 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
- 90 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1887 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
861
WGUS55 KVEF 140439
FFWVEF
CAC071-140600-
/O.NEW.KVEF.FF.W.0018.120714T0439Z-120714T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
939 PM PDT FRI JUL 13 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 1100 PM PDT.
* AT 925 PM PDT...FLASH FLOODING HAS BEEN HAS BEEN REPORTED BY
CALIFORNIA HIGHWAY PATROL AND SPOTTERS IN THE VIDAL JUNCTION AREA
FROM HEAVY RAINFALL WHICH FELL OVER THE REGION EARLIER THIS
AFTERNOON AND EVENING.
* LOCATIONS IMPACTED INCLUDE...
THE MAIN AREA OF IMPACT WILL BE HIGHWAY 95 NORTH OF VIDAL JUNCTION
TO MILE MARKER 33 AND ALSO ALONG HIGHWAY 62 WEST OF VIDAL JUNCTION
TO MILE MARKER 62.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3408 11503 3416 11498 3420 11476 3460 11468
3462 11456 3414 11453 3406 11475
$$
JENSEN2 follow-up statements
759
WGUS75 KVEF 140522
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1022 PM PDT FRI JUL 13 2012
CAC071-140600-
/O.CON.KVEF.FF.W.0018.000000T0000Z-120714T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
1022 PM PDT FRI JUL 13 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM PDT FOR
SOUTHEASTERN SAN BERNARDINO COUNTY...
AT 1013 PM PDT...FLASH FLOODING HAS BEEN HAS BEEN REPORTED BY
CALIFORNIA HIGHWAY PATROL IN THE VIDAL JUNCTION AREA FROM HEAVY
RAINFALL WHICH FELL OVER THE REGION EARLIER THIS AFTERNOON AND
EVENING. THE LATEST REPORTS INDICATE THAT THE WATER IS BEGINNING TO
RECEDED...HOWEVER FLOWING WATER IS STILL BEING REPORTED.
LOCATIONS IMPACTED INCLUDE...
THE MAIN AREA OF IMPACT WILL BE HIGHWAY 95 NORTH OF VIDAL JUNCTION
TO MILE MARKER 33 AND ALSO ALONG HIGHWAY 62 WEST OF VIDAL JUNCTION
TO MILE MARKER 62.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3408 11503 3416 11498 3420 11476 3460 11468
3462 11456 3414 11453 3406 11475
$$
JENSEN914
WGUS75 KVEF 140554
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1054 PM PDT FRI JUL 13 2012
CAC071-140601-
/O.EXP.KVEF.FF.W.0018.000000T0000Z-120714T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
1054 PM PDT FRI JUL 13 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1100 PM PDT FOR
SOUTHEASTERN SAN BERNARDINO COUNTY...
THERE HAVE BEEN NO NEW REPORTS OF FLOODING ALONG HIGHWAY 62 WEST OF
VIDAL JUNCTION OR NORTH ALONG HIGHWAY 95 AND WILL ALLOW THE FLASH
FLOOD WARNING TO EXPIRE AS OF 11 PM.
HOWEVER...TRAVELERS ACROSS SOUTHEAST SAN BERNARDINO COUNTY SHOULD
USE EXTREME CAUTION OVERNIGHT AS HEAVY RAINS FROM THUNDERSTORMS
EARLY THIS AFTERNOON AND EVENING HAVE CREATED FLOWING WATER IN
NORMALLY DRY WASHES AND ACROSS LOW WATER CROSSING. IN ADDITION...
PONDING OF WATER WILL BE SEEN IN LOW LYING AREAS. REMEMBER THAT
WATER IS ESPECIALLY HARD TO SEE AT NIGHT.
LAT...LON 3408 11503 3416 11498 3420 11476 3460 11468
3462 11456 3414 11453 3406 11475
$$
JENSENThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 5:35 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Jul 13, 5:55 PM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Jul 13, 6:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 13, 7:20 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Jul 13, 8:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 61 min |
| Jul 13, 8:50 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Jul 13, 11:46 PM PDT | Flash Flood Warning | VEF | San Bernardino | 97 min |
| Jul 14, 12:19 AM PDT | Flash Flood Warning | VEF | Inyo | 86 min |
| Jul 14, 1:09 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 35 min |
| Jul 14, 1:19 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 min |
| Jul 14, 1:34 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 14, 1:36 PM PDT | Flash Flood Warning | VEF | San Bernardino | 114 min |
| Jul 14, 1:42 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 21 min |
| Jul 14, 4:22 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 min |
| Jul 14, 4:29 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
| Jul 14, 4:33 PM PDT | Flash Flood Warning | VEF | San Bernardino | 117 min |
| Jul 14, 4:38 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2012Every flash flood warning in 2012
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.