Alert archive / California / Flash Flood Warnings in 2005
Flash Flood Warning 54, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Aug 6, 2005, 4:55 PM PDT for Los Angeles County, California. It was in force for 65 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
- Aug 6, 2005, 4:55 PM PDT (23:55 UTC)
- Expired
- Aug 6, 2005, 6:00 PM PDT
- In force
- 65 min
- Issued by
- NWS Los Angeles, CA
- Area
- Counties, with a storm outline in the text
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 23:58 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
Edwards AFB, CA (KEDW), launched 12:00Z, 11.9 hours before the alert went out and 89 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
- 117 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 1860 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 38 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Los Angeles, CA wrote its last area forecast discussion before this flash flood warning went out at Aug 6, 2:20 PM PDT, 2 hours 35 minutes earlier.
Area forecast discussion, Aug 6, 2:20 PM PDT, 2 hours 35 minutes before
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</html>Hazardous weather outlook, Aug 6, 6:00 AM PDT, 10 hours 55 minutes before
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
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 3:49 PM PDT | Flash Flood Warning | LOX | Los Angeles | 61 min |
Nearby
Flash Flood Warnings in California, 2005Every flash flood warning in 2005
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.