Alert archive / California / Flash Flood Warnings in 2001

Flash Flood Warning 4, NWS Medford, OR

July 14, 2001Siskiyou County, California

NWS Medford, OR issued this flash flood warning at Jul 14, 2001, 6:09 PM PDT for Siskiyou County, California. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 14, 2001, 6:09 PM PDT (01:09 UTC)
Expired
Jul 14, 2001, 8:15 PM PDT
In force
2 hr
Issued by
NWS Medford, OR
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 41 km from the middle of the area, began a volume at 01:12 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, 1.2 hours before the alert went out and 73 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 2001-07-15Temperature 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 2001-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939Sfc1 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
3113 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
33 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 
WGUS56 KMFR 150114
FFWMFR
CAC093-150315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
609 PM PDT SAT JUL 14 2001

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL SISKIYOU COUNTY IN NORTHERN CALIFORNIA
  THIS INCLUDES THE CITY OF YREKA

* UNTIL 815 PM PDT

* AT 602 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THAT VERY HEAVY RAIN HAD FALLEN OVER THE PAST HOUR AND A HALF 
  JUST WEST OF YREKA. THIS INCLUDES AREAS IN AND AROUND SOAP 
  CREEK...MILL CREEK AND MOFFETT CREEK...ALONG AND JUST NORTH OF 
  HIGHWAY 3 EXTENDING SOUTHWEST OF YREKA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY. MOVE TO HIGHER GROUND.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 4176 12265 4165 12264 4165 12274 4176 12275
$$

STAVISH

Nearby

Flash Flood Warnings in California, 2001Every flash flood warning in 2001

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.