Alert archive / California / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 5, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 14, 2012, 11:35 PM PDT for San Bernardino County, California. It was in force for 40 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 14, 2012, 11:35 PM PDT (06:35 UTC)
- Expired
- Jul 15, 2012, 12:15 AM PDT
- In force
- 40 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 111 km from the middle of the area, began a volume at 06:35 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, 6.6 hours before the alert went out and 129 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
- 48 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 2462 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
593 WUUS55 KVEF 150635 SVRVEF CAC071-150715- /O.NEW.KVEF.SV.W.0005.120715T0635Z-120715T0715Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1135 PM PDT SAT JUL 14 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 1215 AM PDT. * AT 1130 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR BAKER...AND WAS MOVING NORTHEAST AT 15 MPH. DIME SIZE HAIL IS ALSO POSSIBLE. * LOCATIONS IMPACTED INCLUDE... BAKER. THIS INCLUDES INTERSTATE 15 BETWEEN MILE MARKERS 131 AND 148. 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 3542 11599 3524 11578 3509 11603 3522 11619 TIME...MOT...LOC 0635Z 225DEG 12KT 3522 11603 $$ JH
2 follow-up statements
299 WWUS55 KVEF 150655 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1155 PM PDT SAT JUL 14 2012 CAC071-150715- /O.CON.KVEF.SV.W.0005.000000T0000Z-120715T0715Z/ SAN BERNARDINO CA- 1155 PM PDT SAT JUL 14 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM PDT FOR CENTRAL SAN BERNARDINO COUNTY... AT 1152 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR BAKER...AND WAS MOVING NORTHEAST AT 15 MPH. LOCATIONS IMPACTED INCLUDE... BAKER AND INTERSTATE 15 BETWEEN MILE MARKERS 131 AND 148. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM PASSES. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3542 11599 3524 11578 3509 11603 3522 11619 TIME...MOT...LOC 0654Z 225DEG 12KT 3526 11597 $$ JH
661 WWUS55 KVEF 150708 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1208 AM PDT SUN JUL 15 2012 CAC071-150717- /O.EXP.KVEF.SV.W.0005.000000T0000Z-120715T0715Z/ SAN BERNARDINO CA- 1208 AM PDT SUN JUL 15 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SAN BERNARDINO COUNTY WILL EXPIRE AT 1215 AM PDT... THE THUNDERSTORM WHICH PROMPTED THE SEVERE THUNDERSTORM WARNING HAS DIMINISHED. DAMAGING WINDS AND LARGE HAIL ARE NO LONGER A THREAT BUT THE STORM COULD STILL PRODUCE HEAVY RAIN NEAR AND ON INTERSTATE 15. THIS INCLUDES INTERSTATE 15 BETWEEN MILE MARKERS 131 AND 148. LAT...LON 3542 11599 3524 11578 3509 11603 3522 11619 TIME...MOT...LOC 0707Z 225DEG 12KT 3529 11593 $$ JH
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 7:25 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 14, 8:50 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 27 min |
| Jul 14, 9:16 PM PDT | Flash Flood Warning | VEF | San Bernardino | 119 min |
| Jul 15, 12:29 AM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 15, 10:14 AM PDT | Flash Flood Watch | VEF | San Bernardino | 11 hr |
| Jul 15, 11:52 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 15, 11:59 AM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Jul 15, 2:20 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 115 min |
| Jul 15, 3:07 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 min |
| Jul 15, 4:52 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.