Alert archive / California / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 47, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 29, 2012, 1:26 PM PDT for San Bernardino County, California. It was in force for 34 min. 1 report 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 29, 2012, 1:26 PM PDT (20:26 UTC)
- Expired
- Aug 29, 2012, 2:00 PM PDT
- In force
- 34 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County San Bernardino County, CA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 1:45 PM PDT | TSTM WND GST 60 | 23 Wsw Opal Mountain Ra, CA | ESTIMATED 60 MPH WIND GUST REPORTED BY A GAS STATION IN KRAMER JUNCTION. |
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 12:00Z, 8.4 hours before the alert went out and 240 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
- 3526 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
528
WUUS55 KVEF 292026
SVRVEF
CAC071-292100-
/O.NEW.KVEF.SV.W.0047.120829T2026Z-120829T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
126 PM PDT WED AUG 29 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 200 PM PDT.
* AT 122 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED OVER EXTREME WEST CENTRAL SAN
BERNARDINO COUNTY...OR 28 MILES WEST OF BARSTOW...AND WAS MOVING
NORTHEAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...HIGHWAY 395 SOUTH OF KRAMER JUNCTION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING
DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND
DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN
KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS
UNTIL THE STORM PASSES.
REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS
NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER
HASHTAG...NWSVEGAS.
&&
LAT...LON 3508 11756 3502 11736 3481 11748 3487 11765
3493 11765
TIME...MOT...LOC 2025Z 204DEG 32KT 3493 11754
$$
PIERCE2 follow-up statements
472
WWUS55 KVEF 292041
SVSVEF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
141 PM PDT WED AUG 29 2012
CAC071-292100-
/O.CON.KVEF.SV.W.0047.000000T0000Z-120829T2100Z/
SAN BERNARDINO CA-
141 PM PDT WED AUG 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM PDT
FOR WEST CENTRAL SAN BERNARDINO COUNTY...
AT 135 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH IMPACTING HIGHWAYS 58 AND 395 NEAR KRAMER
JUNCTION. THIS STORM WAS LOCATED OVER WEST CENTRAL SAN BERNARDINO
COUNTY...OR 27 MILES WEST OF BARSTOW...AND WAS MOVING NORTH AT 35
MPH.
LOCATIONS IMPACTED INCLUDE...KRAMER JUNCTION...HIGHWAYS 58 AND 395.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING
DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND
DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN
KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS
UNTIL THE STORM PASSES.
REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS
NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER
HASHTAG...NWSVEGAS.
&&
LAT...LON 3508 11756 3502 11736 3481 11748 3487 11765
3493 11765
TIME...MOT...LOC 2039Z 202DEG 32KT 3502 11751
$$
PIERCE883
WWUS55 KVEF 292059
SVSVEF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
159 PM PDT WED AUG 29 2012
CAC071-292108-
/O.EXP.KVEF.SV.W.0047.000000T0000Z-120829T2100Z/
SAN BERNARDINO CA-
159 PM PDT WED AUG 29 2012
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL SAN BERNARDINO
COUNTY WILL EXPIRE AT 200 PM PDT...
THE THUNDERSTORM NEAR KRAMER JUNCTION IS WEAKENING. THE SEVERE
THUNDERSTORM WARNING WILL EXPIRE AT 2 PM PDT.
LAT...LON 3508 11756 3502 11736 3481 11748 3487 11765
3493 11765
TIME...MOT...LOC 2058Z 202DEG 32KT 3518 11743
$$
PIERCEThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 3:23 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 37 min |
| Aug 29, 3:38 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 82 min |
| Aug 29, 4:19 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 116 min |
Nearby
Severe Thunderstorm Warnings in California, 2012Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.