Alert archive / California / Flash Flood Warnings in 1996

Flash Flood Warning 11, NWS Eureka, CA

December 31, 1996Trinity County, California

NWS Eureka, CA issued this flash flood warning at Dec 31, 1996, 1:48 AM PST for Trinity County, California. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 31, 1996, 1:48 AM PST (09:48 UTC)
Expired
Dec 31, 1996, 7:30 AM PST
In force
6 hr
Issued by
NWS Eureka, CA
Area
Whole counties

County Trinity County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 101 km from the middle of the area, began a volume at 09:49 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 9.8 hours before the alert went out and 193 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 00:00Z on 1996-12-31Temperature 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 00:00Z on 1996-12-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 550 square meters per square second.1939587897117Sfc1 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
668 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
550 m²/s²
0-3 km storm-relative helicity
1267 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 310949
FFWEKA
CAC105-311530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE EUREKA CA
148 AM PST TUE DEC 31 1996

THE NATIONAL WEATHER SERVICE IN EUREKA CA HAS ISSUED A FLOOD WARNING
EFFECTIVE UNTIL 730 AM PST FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWESTERN CALIFORNIA

  ...NORTH CENTRAL TRINITY COUNTY
     INCLUDING JUNCTION CITY...COOPER BAR AND BIG BAR

TRINITY COUNTY SHERIFFS OFFICE HAS REPORTED SIGNIFICANT RISES ON THE
TRINITY RIVER NEAR JUNCTION CITY AND COOPER BAR.  SOME EVACUATIONS
HAVE BEGUN ALONG THE TRINITY AND NEARBY CANYON CREEK.  EVENTHOUGH
MOST OF THE RAIN HAS TAPPERED OFF IN THE AREA...WATER FROM RAINS LAST
EVENING ARE STILL DRAINING. 

RESIDENTS AND PEOPLE WITH INTERESTS ALONG THE TRINITY RIVER AND
CANYON CREEK NEED TO BE AWARE OF THE WATER LEVEL AND READY TO ACT
QUICKLY.  STAY IN TOUCH WITH THE SHERIFFS OFFICE FOR POSSIBLE
EVACUATIONS.

LOVEGROVE

Nearby

Flash Flood Warnings in California, 1996Every flash flood warning in 1996

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.