Alert archive / California / Flash Flood Warnings in 1995

Flash Flood Warning 4, NWS Eureka, CA

December 30, 1995Humboldt County, California

NWS Eureka, CA issued this flash flood warning at Dec 30, 1995, 12:15 PM PST for Humboldt County, California. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 1995, 12:15 PM PST (20:15 UTC)
Expired
Dec 30, 1995, 3:00 PM PST
In force
3 hr
Issued by
NWS Eureka, CA
Area
Whole counties

County Humboldt County, CA

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 8.3 hours before the alert went out and 207 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, Medford/Jackson, OR at 12:00Z on 1995-12-30Temperature 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, Medford/Jackson, OR at 12:00Z on 1995-12-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 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
542 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
433 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KEKA 302021 COR
FFWEKA
CAC023-302300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SMALL RIVER AND STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE EUREKA CA
1215 PM PST SAT DEC 30 1995
...CORRECTED FOR TIME...

THE NATIONAL WEATHER SERVICE IN EUREKA CA HAS EXTENDED A SMALL RIVER
AND STREAM FLOOD WARNING EFFECTIVE UNTIL 300 PM PST FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN NORTHWESTERN CALIFORNIA

  ...WEST CENTRAL HUMBOLDT COUNTY
     INCLUDING EUREKA AND ARCATA

REPORTS FROM THE HUMBOLDT COUNTY SHERIFFS OFFICE  AND ROADS DEPT.
CONTINUE TO INDICATE FLOODING OF LOW LYING AREAS AND ROADS.  HWY 36
EAST OF FORTUNA HAS AREAS OF STANDING WATER...ELK RIVER ROAD IS
CLOSED DUE TO FLOODING AND OLD ARCATA ROAD HAS STANDING WATER OVER
AFTERNOON HOURS WITH MOST ROADS BECOMING PASSABLE BY LATE AFTERNOON.

DO NOT ATTEMPT TO DRIVE THROUGH STANDING WATER AND DO NOT DRIVE
AROUND POLICE BARRICADES.

MKN

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 29, 9:00 PM PSTFlash Flood WarningEKAHumboldt6 hr
Dec 30, 9:00 AM PSTFlash Flood WarningEKAHumboldt3 hr
Dec 30, 3:25 PM PSTFlash Flood WarningEKAHumboldt12 hr

Nearby

Flash Flood Warnings in California, 1995Every flash flood warning in 1995

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.