Alert archive / California / Freeze Warnings in 2013

Freeze Warning 18, NWS Medford, OR

May 21, 2013Klamath County, Oregon; Modoc County, Siskiyou County, California

NWS Medford, OR issued this freeze warning at May 21, 2013, 9:28 AM PDT for Klamath County, Oregon; Modoc County, Siskiyou County, California. It took effect at May 22, 2013, 2:00 AM PDT. It was in force for 7 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
May 21, 2013, 9:28 AM PDT (16:28 UTC)
In effect from
May 22, 2013, 2:00 AM PDT
Expired
May 22, 2013, 9:00 AM PDT
In force
7 hr
Issued by
NWS Medford, OR

Counties Modoc County, CA, Siskiyou County, CA, Klamath County, OR

The radar

The Medford radar (KMAX), 90 km from the middle of the area, began a volume at 16:25 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.

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Medford, OR wrote its last area forecast discussion before this freeze warning went out at May 21, 9:21 AM PDT, 7 minutes earlier.

Area forecast discussion, May 21, 9:21 AM PDT, 7 minutes before
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In the hours before

Special weather statement, May 21, 3:36 AM PDT, 5 hours 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OR
336 AM PDT TUE MAY 21 2013

CAZ080>085-ORZ021>031-220015-
WESTERN SISKIYOU COUNTY-CENTRAL SISKIYOU COUNTY-
SOUTH CENTRAL SISKIYOU COUNTY-
NORTH CENTRAL AND SOUTHEAST SISKIYOU COUNTY-
NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-MODOC COUNTY-
SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST-
CENTRAL DOUGLAS COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-
EASTERN DOUGLAS COUNTY FOOTHILLS-JACKSON COUNTY-
SOUTH CENTRAL OREGON CASCADES-
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITIES OF...ETNA...FORT JONES...GREENVIEW...YREKA...
WEED...MOUNT SHASTA...DUNSMUIR...MCCLOUD...TENNANT...TULELAKE...
DORRIS...ALTURAS...COOS BAY...NORTH BEND...REEDSPORT...BANDON...
PORT ORFORD...COQUILLE...BROOKINGS...HARBOR...GOLD BEACH...
DRAIN...ELKTON...ROSEBURG...SUTHERLIN...GREEN...MYRTLE CREEK...
CANYONVILLE...GLENDALE...GRANTS PASS...CAVE JUNCTION...
STEAMBOAT...TOKETEE FALLS...MEDFORD...ASHLAND...CRATER LAKE...
CRESCENT LAKE...DIAMOND LAKE...UNION CREEK...HOWARD PRAIRIE...
SISKIYOU SUMMIT...ALTAMONT...KLAMATH FALLS...BEATTY...BLY...
CHEMULT...CRESCENT...GILCHRIST...SPRAGUE RIVER...LAKEVIEW
336 AM PDT TUE MAY 21 2013

...UNSEASONABLY COLD TEMPERATURES AND PASS LEVEL SNOW EXPECTED
THIS WEEK...

A POTENT COLD FRONT WILL SWEEP THROUGH SOUTHERN OREGON AND
NORTHERN CALIFORNIA TODAY...BRINGING AN UNSEASONABLY COLD AIR
MASS TO THE AREA. STRONG GUSTY WINDS AND WIDESPREAD PRECIPITATION
WILL ACCOMPANY THE FRONT AS IT PASSES THROUGH...AND TEMPERATURES
WILL FALL SHARPLY.

SNOW LEVELS ARE EXPECTED TO DROP TO AROUND 2800 FEET BY WEDNESDAY
MORNING...BRINGING IN 3 TO 6 INCHES OF SNOW OVER ALL CASCADE
PASSES AND 1 TO 3 INCHES OVER SISKIYOU SUMMIT. SNOW AMOUNTS OF 3
TO 6 INCHES ARE POSSIBLE ON THE HIGHER PORTIONS OF BEAR CAMP ROAD.
SNOW LEVELS MAY DROP BRIEFLY DOWN TO LOWER PASSES LIKE SEXTON
SUMMIT AS WELL. HOWEVER...WITH THE LONGER DAYS AND HIGHER SUN
ANGLES SOIL AND ROAD TEMPERATURES ARE QUITE WARM...AND IT WILL BE
DIFFICULT FOR SNOW TO ACCUMULATE.

COLD NIGHTTIME TEMPERATURES WILL BRING BELOW FREEZING TEMPERATURES
EAST OF THE CASCADES TONIGHT AND WEDNESDAY NIGHT. TEMPERATURES IN PLACES
EAST OF THE CASCADES MAY DROP INTO THE MID TO LOWER 20S...POSSIBLY
CAUSING UNPROTECTED EXPOSED PIPES TO BURST.

STAY TUNED TO YOUR LOCAL NATIONAL WEATHER SERVICE FORECASTS FOR
UPDATES AS THE SYSTEM PROGRESSES.

PETRUCELLI

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 8:52 PM PDTGale WarningMFR15 hr
May 21, 3:39 AM PDTWind AdvisoryMFRKlamath, Lake16 hr

Nearby

Freeze Warnings in California, 2013Freeze Warnings in Oregon, 2013Every freeze warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.