Alert archive / California / Flash Flood Warnings in 1993

Flash Flood Warning 9, NWS Eureka, CA

January 20, 1993Lake County, Mendocino County, California

NWS Eureka, CA issued this flash flood warning at Jan 20, 1993, 2:32 PM PST for Lake County, Mendocino County, California. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jan 20, 1993, 2:32 PM PST (22:32 UTC)
Expired
Jan 20, 1993, 9:00 PM PST
In force
6 hr
Issued by
NWS Eureka, CA
Area
Whole counties

Counties Lake County, CA, Mendocino County, CA

The nearest sounding before it

Oakland, CA (KOAK), launched 12:00Z, 10.5 hours before the alert went out and 188 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.

Skew-T log-pSkew-T log-p diagram, Oakland, CA at 12:00Z on 1993-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 12:00Z on 1993-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 342 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
532 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
342 m²/s²
0-3 km storm-relative helicity
472 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 20, 9:12 AM PSTFlash Flood WarningEKALake, Mendocino3 hr
Jan 20, 10:15 AM PSTFlash Flood WarningEKAMendocino6 hr
Jan 20, 10:15 AM PSTFlash Flood WarningEKANapa, Sonoma6 hr
Jan 20, 11:48 AM PSTFlash Flood WarningEKALake, Mendocino4 hr
Jan 20, 2:35 PM PSTFlash Flood WarningEKANapa, Sonoma5 hr
Jan 20, 2:35 PM PSTFlash Flood WarningEKAMendocino5 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.