Alert archive / California / Flash Flood Warnings in 1996

Flash Flood Warning 1, NWS Medford, OR

July 13, 1996Siskiyou County, California

NWS Medford, OR issued this flash flood warning at Jul 13, 1996, 5:25 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 counties it named.

The facts

Issued
Jul 13, 1996, 5:25 PM PDT (00:25 UTC)
Expired
Jul 13, 1996, 7:25 PM PDT
In force
2 hr
Issued by
NWS Medford, OR
Area
Whole counties

County Siskiyou County, CA

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 00:00Z, 0.4 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.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 00:00Z on 1996-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 119 joules per kilogram.LCLLFCEL10008507005003002001001 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 1996-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
119 J/kg
Mixed-layer CIN
-205 J/kg
Mixed-layer LCL
3627 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
55 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 KMFR 140026
FFWMFR
CAC093-140225-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
525 PM PDT SAT JUL 13 1996

THE NATIONAL WEATHER SERVICE IN MEDFORD OR HAS ISSUED A FLASH FLOOD
WARNING EFFECTIVE UNTIL 725 PM PDT FOR PEOPLE IN THE FOLLOWING
LOCATIONS...

IN NORTH CENTRAL CALIFORNIA

  ...SOUTHWESTERN SISKIYOU COUNTY

NATIONAL WEATHER SERVICE DOPPLER RADAR IN MEDFORD OREGON HAS SHOWN
CONTINUOUS THUNDERSTORM ACTIVITY IN SOUTHWESTERN SISKIYOU COUNTY IN
THE MOUNTAINOUS REGIONS ALONG THE SALMON RIVER.  DOPPLER RADAR
RAINFALL ESTIMATES HAVE INDICATED THAT UP TO 3 INCHES OF RAIN HAS
FALLEN IN THE PAST TWO HOURS.

THESE THUNDERSTORMS ARE EXPECTED TO REMAIN OVER SOUTHWESTERN SISKIYOU
COUNTY UNTIL SUNSET.

PERSONS AND RECREATION INTERESTS ALONG THE SALMON RIVER FROM SOMES
BAR TO CECILVILLE...AND UPSTREAM FROM CECILVILLE SHOULD BE ON THE
LOOKOUT FOR RAPIDLY RISING LEVELS OF STREAMS AND CREEKS WHICH FEED
INTO THEB SALMON RIVER.

DO NOT CAMP OR PARK YOUR VEHICLE NEAR STREAMS OR OTHER AREAS SUBJECT
TO FLASH FLOODING...ESPECIALLY DURING THREATENING AND RAINY WEATHER
SITUATION.

VAN TRESS

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.

In the hours before

Special weather statement, Jul 13, 4:56 PM PDT, 29 minutes before
ORZ005-009-013-CAZ007-008-140200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OR
447 PM PDT SAT JUL 13 1996

THUNDERSTORMS CONTINUE TO MOVE ACROSS NORTHERN CALIFORNIA INTO
SOUTHERN OREGON. AT 440 PM AN AREA OF THUNDERSTORMS WAS OVER
SOUTHWESTERN SISKIYOU COUNTY FROM SOMES BAR TO CECILVILLE...ALONG THE
SALMON RIVER. THESE STORMS ARE PRODUCING HEAVY RAIN AND POSSIBLY
SMALL HAIL...AND MAY CAUSE STREAMS AND RIVERS TO RISE RAPIDLY.

OTHER THUNDERSTORMS WERE OVER EASTERN SISKIYOU COUNTY EAST OF YREKA
TO NEAR TENNANT...EXTENDING INTO SOUTHERN MODOC COUNTY NEAR ADIN.
THUNDERSTORMS WERE ALSO DEVELOPING OVER SOUTHERN JACKSON AND
JOSEPHINE COUNTIES IN OREGON.

THESE STORMS ARE MOVING SLOWLY TO THE NORTHWEST...AND SOME STORMS ARE
NEARLY STATIONARY CAUSING LOCALLY HEAVY RAIN.

OUTDOOR RECREATION INTERESTS ALONG THE SALMON RIVER FROM SOMES BAR TO
CECILVILLE SHOULD BE ON THE LOOKOUT FOR RAPIDLY RISING WATER LEVELS
ALONG STREAMS AND CREEKS FEEDING INTO THE SALMON RIVER.

RC

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 5:01 PM PDTSevere Thunderstorm WarningMFRSiskiyou49 min
Jul 14, 2:20 PM PDTFlash Flood WarningMFRModoc65 min

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.