Severe Thunderstorm Warning 3, NWS Medford, OR

Issued

Jul 23, 2003, 5:34 PM PDT (00:34 UTC)

Expired

Jul 23, 2003, 6:30 PM PDT

In force

56 min

Issued by

NWS Medford, OR

Area

Counties, with a storm outline in the text

County Siskiyou County, CA

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

529 
WUUS56 KMFR 240034
SVRMFR
CAC093-240130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
534 PM PDT WED JUL 23 2003

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SISKIYOU COUNTY IN NORTHERN CALIFORNIA
  THIS INCLUDES AREAS WEST OF THE CITY OF MOUNT SHASTA

* UNTIL 630 PM PDT

* AT 524 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES WEST OF MOUNT SHASTA.  THE STORM WAS
  NEARLY STATIONARY.

* THE SEVERE THUNDERSTORM WILL BE...
  5 MILES SOUTHWEST OF MOUNT SHASTA AT 625 PM PDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO
RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MEDFORD.

LAT...LON 4144 12239 4136 12260 4115 12248 4126 12222

$$

STOCKTON

NWS Medford, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 2:30 PM PDT, 3 hours 4 minutes earlier.

SOUTHWEST OREGON AND NORTHERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD, OR
230 PM PDT WED JUL 23 2003

LATEST SATELLITE SHOWING LARGE AREA OF MID/HIGH LEVEL CLOUDS OVER
CENTRAL CALIF. SPREADING NORTH INTO NORTHERN CALIF THEN NORTHEAST
INTO SOUTHERN OREGON. RADAR JUST STARTING TO SHOW SOME FAIRLY STRONG
LOOKING CELLS JUST SOUTH AND EAST OF MODOC COUNTY. SHOULD NOT BE
LONG BEFORE WE SEE DEVELOPMENT IN OUR REGION.

STRONG UPPER LEVEL HIGH PRESSURE WILL TEMPORARILY SHIFT BACK TO NEAR
THE SOUTHWEST U.S. THURSDAY THROUGH SATURDAY. AREA OF CONVECTION
EAST OF THE CASCADES THE PAST COUPLE OF DAYS WILL GRADUALLY SHIFT
FURTHER EAST THURSDAY AND FRIDAY AS UPPER FLOW BECOMES MORE
WESTERLY. LOCATIONS THAT HAVE SEEN TRIPLE DIGIT HIGH TEMPS LAST FEW
DAYS WILL COOL OFF CLOSER TO NORMAL BEGINNING THURSDAY AS HIGH
PRESSURE SHIFTS EAST.

EXTENDED...MODELS SHOW FOUR CORNERS HIGH SHIFTING NORTH AGAIN TO
OVER NEVADA...WHICH PLACES OUR REGION BACK INTO A MORE SOUTHERLY
FLOW ALOFT. THIS WILL OPEN THE DOOR ONCE AGAIN FOR POSSIBLE
THUNDERSTORMS AS SURGES OF MOISTURE MOVE NORTHWARD FROM CALIFORNIA.
RIGHT NOW WILL KEEP THINGS DRY AND WAIT FOR AT LEAST ANOTHER MODEL
RUN.

.MFR...SMALL CRAFT ADVISORY FLORENCE OR TO PT ST GEORGE.

RH

Severe Thunderstorm Warnings in California, 2003Every severe thunderstorm warning in 2003

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.