Alert archive / California / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 13, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at May 28, 2009, 3:57 PM PDT for Lassen County, California. It was in force for 48 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
- May 28, 2009, 3:57 PM PDT (22:57 UTC)
- Expired
- May 28, 2009, 4:45 PM PDT
- In force
- 48 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
County Lassen County, CA
The radar
The Beale AFB radar (KBBX), 145 km from the middle of the area, began a volume at 22:59 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
Medford/Jackson, OR (KMFR), launched 12:00Z, 11.0 hours before the alert went out and 242 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
- 1770 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KREV 282257 SVRREV CAC035-282345- /O.NEW.KREV.SV.W.0013.090528T2257Z-090528T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RENO NV 357 PM PDT THU MAY 28 2009 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN LASSEN COUNTY IN NORTHERN CALIFORNIA... * UNTIL 445 PM PDT * AT 354 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 20 MILES SOUTH OF NUBIEBER TO 20 MILES SOUTH OF EAGLE LAKE...AND MOVING NORTHWEST AT 10 MPH. * LOCATIONS AFFECTED INCLUDE...JUNCTION CA 36 AND CA 44...ASPEN GROVE CAMPGROUND...CRATER LAKE CAMPGROUND...AND THE SOUTH SIDE OF EAGLE LAKE. THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL...IN ADDITION TO FREQUENT DEADLY LIGHTNING...HIGH WINDS...AND HEAVY RAIN. IF TIME PERMITS...MOVE YOUR VEHICLE INTO A GARAGE...AND SEEK SHELTER INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. BOATERS ON EAGLE LAKE SHOULD SEEK SAFE HARBOR. THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. WATCH FOR PONDING WATER ON AREA ROADWAYS. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING HEAVY RAINS...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. LAT...LON 4096 12096 4036 12066 4029 12089 4090 12129 TIME...MOT...LOC 2255Z 145DEG 10KT 4081 12108 4036 12078 $$ JORDAN
2 follow-up statements
000 WWUS55 KREV 282320 SVSREV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 420 PM PDT THU MAY 28 2009 CAC035-282345- /O.CON.KREV.SV.W.0013.000000T0000Z-090528T2345Z/ LASSEN CA- 420 PM PDT THU MAY 28 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR WEST CENTRAL LASSEN COUNTY... AT 416 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL TO NICKEL SIZE. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 17 MILES NORTH OF CRATER LAKE CAMPGROUND TO CRATER LAKE CAMPGROUND...OR ALONG A LINE EXTENDING FROM 16 MILES SOUTH OF NUBIEBER TO 12 MILES WEST OF EAGLE LAKE...MOVING NORTHWEST AT 10 MPH. * LOCATIONS AFFECTED INCLUDE THE FAR SOUTHWEST SHORE OF EAGLE LAKE. IN ADDITION TO HAIL...THIS STORM IS CAPABLE OF PRODUCING LOCALLY VERY HEAVY RAINFALL. WATCH FOR PONDING WATER ON AREA ROADWAYS. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING HEAVY RAINS...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. WHEN IT IS SAFE...REPORT ANY WIND DAMAGE...LARGE HAIL...OR FLOODING FROM THIS STORM TO THE NATIONAL WEATHER SERVICE IN RENO. CALL OUR OFFICE AT 775-673-8100. YOUR REPORT MAY SAVE LIVES LAT...LON 4084 12122 4092 12096 4059 12081 4050 12099 TIME...MOT...LOC 2319Z 145DEG 10KT 4086 12113 4061 12096 $$ SNYDER
000 WWUS55 KREV 282344 SVSREV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 444 PM PDT THU MAY 28 2009 CAC035-282351- /O.EXP.KREV.SV.W.0013.000000T0000Z-090528T2345Z/ LASSEN CA- 444 PM PDT THU MAY 28 2009 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL LASSEN COUNTY WILL EXPIRE AT 445 PM PDT... THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...OCCASIONAL CLOUD TO GROUND LIGHTNING AND HEAVY RAIN WILL STILL OCCUR WITH THUNDERSTORMS THROUGH AROUND 510 PM. IF YOU OBSERVED ANY WIND DAMAGE...LARGE HAIL...OR FLOODING FROM THE STORM EARLIER...REPORT IT TO THE NATIONAL WEATHER SERVICE IN RENO. CALL OUR OFFICE AT 775-673-8100. YOUR REPORTS HELP US IMPROVE OUR WARNING PROCESS. LAT...LON 4084 12122 4092 12096 4059 12081 4050 12099 TIME...MOT...LOC 2341Z 145DEG 10KT 4091 12118 4066 12101 $$ SNYDER
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 3:19 PM PDT | Severe Thunderstorm Warning | REV | Sierra | 41 min |
| May 28, 3:35 PM PDT | Severe Thunderstorm Warning | REV | Plumas, Sierra | 40 min |
| May 28, 4:32 PM PDT | Flash Flood Warning | REV | Lassen | 118 min |
| May 28, 4:56 PM PDT | Severe Thunderstorm Warning | REV | Lassen, Plumas | 21 min |
Nearby
Severe Thunderstorm Warnings in California, 2009Every severe thunderstorm warning in 2009
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.