Alert archive / California / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this severe thunderstorm warning at May 20, 2002, 12:14 PM PDT for Monterey County, California. It was in force for 46 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 20, 2002, 12:14 PM PDT (19:14 UTC)
- Expired
- May 20, 2002, 1:00 PM PDT
- In force
- 46 min
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Counties, with a storm outline in the text
County Monterey County, CA
The radar
The San Francisco radar (KMUX), 61 km from the middle of the area, began a volume at 19:16 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
Oakland, CA (KOAK), launched 12:00Z, 7.2 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
- 4 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KMTR 201914 SVRSFO CAC053-202000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1209 PM PDT MON MAY 20 2002 THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO BAY AREA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MONTEREY COUNTY IN WESTERN CALIFORNIA THIS INCLUDES THE CITIES OF...SEASIDE...SALINAS...MONTEREY...MARINA * UNTIL 100 PM PDT * AT 1210 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CARMEL-BY-THE-SEA...OR ABOUT 6 MILES SOUTHWEST OF MONTEREY...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MONTEREY...4 MILES SOUTHEAST OF PACIFIC GROVE AT 1215 PM PDT OVER SEASIDE AT 1220 PM PDT OVER MARINA AT 1225 PM PDT 4 MILES SOUTHEAST OF CASTROVILLE AT 1235 PM PDT 5 MILES NORTHWEST OF SALINAS AT 1240 PM PDT 3 MILES SOUTH OF PRUNEDALE AT 100 PM PDT IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...FREQUENT LIGHTNING...AND VERY HEAVY RAIN. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN FRANCISCO BAY AREA. LAT...LON 3656 12208 3640 12181 3670 12150 3684 12168
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 12:23 PM PDT | Severe Thunderstorm Warning | MTR | San Mateo | 67 min |
| May 20, 1:01 PM PDT | Severe Thunderstorm Warning | MTR | San Mateo | 29 min |
Nearby
Severe Thunderstorm Warnings in California, 2002Every severe thunderstorm warning in 2002
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.