Alert archive / California / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 23, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at Sep 4, 2003, 3:01 PM PDT for Lassen County, Plumas County, California. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 4, 2003, 3:01 PM PDT (22:01 UTC)
- Expired
- Sep 4, 2003, 3:30 PM PDT
- In force
- 29 min
- Issued by
- NWS Reno, NV
- Area
- Whole counties
Counties Lassen County, CA, Plumas County, CA
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 10.0 hours before the alert went out and 231 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
- 2334 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 10 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 042201 SVRREV CAC035-063-042230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RENO NV 300 PM PDT THU SEP 4 2003 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN LASSEN COUNTY IN NORTHERN CALIFORNIA THIS INCLUDES THE CITIES OF...HERLONG...DOYLE EAST CENTRAL PLUMAS COUNTY IN NORTHERN CALIFORNIA THIS INCLUDES THE CITIES OF...CHILCOOT...BECKWOURTH * UNTIL 330 PM PDT * AT 253 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES WEST OF FRENCHMAN LAKE...OR ABOUT 10 MILES NORTHEAST OF BECKWOURTH...MOVING NORTHEAST AT 20 MPH. HAIL UP TO 1 INCH IN DIAMETER MAY BE POSSIBLE WITH THESE STORMS. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. REPORT DAMAGING WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. $$ LAT...LON 3973 12047 3973 12004 4031 12002 4033 12042
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 4, 2:50 PM PDT, 11 minutes earlier.
Area forecast discussion, Sep 4, 2:50 PM PDT, 11 minutes before
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RENO NV 250 PM PDT THU SEP 4 2003 WEST WINDS DID NOT MATERIALIZE AND SCATTERED THUNDERSTORMS...SOME WITH LARGE HAIL...HAVE DEVELOPED FROM THE TAHOE AREA TO SOUTHERN LASSEN COUNTY. ISOLATED STORMS IN THE WESTERN NEVADA VALLEYS AS WELL. THIS WILL CONTINUE INTO THE EVENING BUT SHOULD DISSIPATE AFTER SUNSET. ETA HANGS ONTO MORE LOW LEVEL MOISTURE AND INSTABILITY TOMORROW WHILE GFS BRINGS IN A BIT MORE WEST WIND...DRYING OUT THE WESTERN AREAS. GIVEN WHAT HAPPENED TODAY WILL TREND TOWARDS THE MORE PESSIMISTIC AND SLOWER ETA MODEL AND CONTINUE TO MENTION ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS AGAIN TOMORROW ACROSS THE REGION. THESE WILL AGAIN BE DIURNAL IN NATURE. FRIDAY NIGHT AND SATURDAY ATMOSPHERE WILL DRY OUT AS A SHORT WAVE MOVES INTO THE PACIFIC NORTHWEST. THIS FEATURE WILL PUSH A DRY COLD FRONT INTO NORTHERN NEVADA SUNDAY...BRINGING COOLER AND BREEZY TO LOCALLY WINDY CONDITIONS. SG IN THE EXTENDED...MONDAY THROUGH THURSDAY... MODEL RUNS DURING THE DAY TODAY CONT TO WEAK PACIFIC NW TROF. TROF WILL PASS TO THE NORTH EARLY MONDAY WITH A TRAILING COLD FRONT MOVING THROUGH THE CWA. COOLER TEMPERATURES LIKELY TO SETTLE INTO THE CWA WITH WINDS SHIFTING TO THE NORTH. BY THURSDAY WE SEE A BUILD OF A SIGNIFICANT RIDGE IN THE EASTERN PACIFIC WHICH LEAVES A DRY NW FLOW INTO WESTERN NEVADA AND THE NRN SIERRA. JF .REV...NONE.
Hazardous weather outlook, Sep 4, 6:50 AM PDT, 8 hours 11 minutes before
CAZ070>073-NVZ001>005-051400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RENO NV 650 AM PDT THU SEP 04 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NEVADA...THE EASTERN SIERRA AND NORTHEASTERN CALIFORNIA. .DAY ONE...TODAY SCATTERED THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL TODAY ACROSS THE REGION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 4:38 PM PDT | Severe Thunderstorm Warning | REV | Nevada, Sierra | 37 min |
Nearby
Severe Thunderstorm Warnings in California, 2003Every severe thunderstorm warning in 2003
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.