Alert archive / California / Flash Flood Warnings in 1993
Flash Flood Warning 3, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jan 18, 1993, 10:06 AM PST for San Diego County, California. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jan 18, 1993, 10:06 AM PST (18:06 UTC)
- Expired
- Jan 18, 1993, 4:15 PM PST
- In force
- 6 hr
- Issued by
- NWS San Diego, CA
- Area
- Whole counties
County San Diego County, CA
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 6.1 hours before the alert went out and 47 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
- 331 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 590 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jan 18, 4:26 AM PST, 5 hours 40 minutes before
CAZ013-181800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 4:25 AM PST MON JAN 18 1993 ...A WINTER STORM WARNING FOR SAN DIEGO COUNTY MOUNTAINS THIS MORNING... A WINTER STORM WARNING REMAINS POSTED FOR SAN DIEGO COUNTY MOUNTAINS THIS MORNING. COOL...MOIST...UNSTABLE AIR WILL BRING SHOWERS AND THUNDERSTORMS TO MOST OF THE AREA TODAY. THE SNOW LEVEL HAS LOWERED TO 5000 FEET AND THE MOUNTAINS CAN EXPECT LOCALLY HEAVY SNOW OF 8 TO 12 INCHES ALONG WITH STRONG GUSTY SOUTH TO SOUTHWEST WIND OF 25 TO 40 MPH. AREAS OF DENSE FOG ALONG WITH ICY ROADS CAN ALSO BE EXPECTED THIS MORNING. TRAVELERS GOING INTO THE MOUNTAINS OF SAN DIEGO COUNTY TODAY ARE URGED TO BE PREPARED FOR DANGEROUS WINTER STORM CONDITIONS AND BE EQUIPPED WITH CHAINS...EXTRA WARM CLOTHING AND FOOD. O'LEARY
Special weather statement, Jan 18, 6:38 AM PST, 3 hours 28 minutes before
CAZ013-181800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 6:35 AM PST MON JAN 18 1993 ...A WINTER STORM WARNING FOR SAN DIEGO COUNTY MOUNTAINS THIS MORNING... ...HEAVY SNOW FALLING IN JULIAN... A WINTER STORM WARNING REMAINS POSTED FOR SAN DIEGO COUNTY MOUNTAINS THIS MORNING. COOL...MOIST...UNSTABLE AIR WILL BRING SHOWERS AND THUNDERSTORMS TO MOST OF THE AREA TODAY. THE SNOW LEVEL HAS LOWERED TO 5000 FEET AND LOCALLY TO 4000 FEET. THE MOUNTAINS CAN EXPECT LOCALLY HEAVY SNOW OF 8 TO 12 INCHES WITH STRONG GUSTY SOUTH TO SOUTHWEST WIND OF 25 TO 40 MPH. AREAS OF DENSE FOG ALONG WITH ICY ROADS CAN ALSO BE EXPECTED THIS MORNING. TRAVELERS GOING INTO THE MOUNTAINS OF SAN DIEGO COUNTY TODAY ARE URGED TO BE PREPARED FOR DANGEROUS WINTER STORM CONDITIONS AND BE EQUIPPED WITH CHAINS...EXTRA WARM CLOTHING AND FOOD. O'LEARY
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 8:44 AM PST | Flash Flood Warning | SGX | San Diego | 4 hr |
Nearby
Flash Flood Warnings in California, 1993Every flash flood warning in 1993
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.