Alert archive / California / Flash Flood Watches in 2013
Flash Flood Watch 4, NWS San Diego, CA
NWS San Diego, CA issued this flash flood watch at Aug 26, 2013, 1:24 AM PDT for 4 counties in California. It took effect at Aug 26, 2013, 10:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Aug 26, 2013, 1:24 AM PDT (08:24 UTC)
- In effect from
- Aug 26, 2013, 10:00 AM PDT
- Expired
- Aug 26, 2013, 5:59 PM PDT
- In force
- 8 hr
- Issued by
- NWS San Diego, CA
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 08:27 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
San Diego, CA (KNKX), launched 00:00Z, 8.4 hours before the alert went out and 124 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
- 3 J/kg
- Mixed-layer CIN
- -329 J/kg
- Mixed-layer LCL
- 1815 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before this flash flood watch went out at Aug 25, 9:45 PM PDT, 3 hours 39 minutes earlier.
Area forecast discussion, Aug 25, 9:45 PM PDT, 3 hours 39 minutes before
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</html>Hazardous weather outlook, Aug 25, 6:02 PM PDT, 7 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 602 PM PDT SUN AUG 25 2013 CAZ055-056-058-060>062-270100- SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS- COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS- 602 PM PDT SUN AUG 25 2013 ...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT THUNDERSTORMS WITH AREAS OF HEAVY RAINFALL...MAINLY THROUGH THIS EVENING...ISOLATED THUNDERSTORMS MAY CONTINUE OVER NIGHT. A FLASH FLOOD WATCH IS IN EFFECT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY FOR MONDAY AND MONDAY EVENING..NUMEROUS THUNDERSTORMS WITH AREAS OF HEAVY RAINFALL. A FLASH FLOOD WATCH IS IN EFFECT. FOR TUESDAY THROUGH SATURDAY...CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS REQUESTED. CAZ048-057-270100- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 556 PM PDT SUN AUG 25 2013 ...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS WITH HEAVY RAIN POSSIBLE. A FLASH FLOOD WATCH IS IN EFFECT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY FOR MONDAY AND MONDAY EVENING...SCATTERED TO NUMEROUS THUNDERSTORMS WITH HEAVY RAIN SHOWERS ARE POSSIBLE. A FLASH FLOOD WATCH IS IN EFFECT. FOR TUESDAY THROUGH SATURDAY...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS REQUESTED. CAZ050-270100- SAN DIEGO COUNTY VALLEYS- 556 PM PDT SUN AUG 25 2013 ...FLASH FLOOD WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE POSSIBLE WITH HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY FOR MONDAY AND MONDAY EVENING...SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL ARE POSSIBLE. A FLASH FLOOD WATCH IS IN EFFECT. FOR TUESDAY THROUGH SATURDAY...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS REQUESTED. PZZ750-775-270100- COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30 NM- WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60 NM OUT INCLUDING SAN CLEMENTE ISLAND- 556 PM PDT SUN AUG 25 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY MONDAY AND MONDAY EVENING...THERE IS A CHANCE OF THUNDERSTORMS WITH HEAVY RAIN. FOR TUESDAY THROUGH SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS REQUESTED. CAZ042-043-270100- ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- 556 PM PDT SUN AUG 25 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY FOR MONDAY AND MONDAY NIGHT...SCATTERED THUNDERSTORMS WITH HEAVY RAIN POSSIBLE. FOR TUESDAY THROUGH SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS REQUESTED. BALFOUR
In the hours before
Local storm report, Aug 25, 8:33 PM PDT, 4 hours 51 minutes before
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</html>Local storm report, Aug 25, 8:41 PM PDT, 4 hours 43 minutes before
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</html>Local storm report, Aug 25, 11:15 PM PDT, 2 hours 9 minutes before
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</html>The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 5:06 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Aug 25, 5:14 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 25, 7:49 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
Nearby
Flash Flood Watches in California, 2013Every flash flood watch in 2013
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.