Alert archive / California / Flash Flood Watches in 2008
Flash Flood Watch 9, NWS San Diego, CA
NWS San Diego, CA issued this flash flood watch at Aug 7, 2008, 6:36 AM PDT for Riverside County, San Bernardino County, San Diego County, California. It took effect at Aug 7, 2008, 7:00 AM PDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Aug 7, 2008, 6:36 AM PDT (13:36 UTC)
- In effect from
- Aug 7, 2008, 7:00 AM PDT
- Expired
- Aug 7, 2008, 4:52 PM PDT
- In force
- 10 hr
- Issued by
- NWS San Diego, CA
- Flood severity
- None
Counties Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 1.6 hours before the alert went out and 145 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
- 1664 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 31 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 7, 2:00 AM PDT, 4 hours 36 minutes earlier.
Area forecast discussion, Aug 7, 2:00 AM PDT, 4 hours 36 minutes before
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</html>Hazardous weather outlook, Aug 7, 5:00 AM PDT, 1 hour 36 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 7, 10:20 AM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Aug 7, 10:38 AM PDT | Areal Flood Advisory | SGX | San Diego | 2 hr |
| Aug 7, 1:08 PM PDT | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Aug 7, 1:34 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
Nearby
Flash Flood Watches in California, 2008Every flash flood watch in 2008
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.