Alert archive / California / Winter Storm Watches in 2011

Winter Storm Watch 3, NWS Medford, OR

February 28, 2011Siskiyou County, California

NWS Medford, OR issued this winter storm watch at Feb 28, 2011, 3:27 PM PST for Siskiyou County, California. It took effect at Mar 1, 2011, 10:00 PM PST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 28, 2011, 3:27 PM PST (23:27 UTC)
In effect from
Mar 1, 2011, 10:00 PM PST
Expired
Mar 1, 2011, 3:54 AM PST
In force
Issued by
NWS Medford, OR

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 23:29 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 12:00Z, 11.5 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 12:00Z on 2011-02-28Temperature 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 12:00Z on 2011-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
1484 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
335 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm watch 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 winter storm watch went out at Feb 28, 9:09 AM PST, 6 hours 18 minutes earlier.

Area forecast discussion, Feb 28, 9:09 AM PST, 6 hours 18 minutes before
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Hazardous weather outlook, Feb 28, 5:48 AM PST, 9 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEDFORD OR
548 AM PST MON FEB 28 2011

ORZ021-022-010100-
SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST-
548 AM PST MON FEB 28 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
OREGON.

.DAY ONE...TODAY AND TONIGHT

A HIGH WIND WARNING HAS BEEN ISSUED AND IS IN EFFECT UNTIL 1 PM
PST THIS AFTERNOON. PLEASE SEE LATEST WARNING MESSAGE FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER STRONG SYSTEM WILL MOVE TOWARDS THE COAST TUESDAY NIGHT.
THE POTENTIAL FOR EVEN STRONGER WINDS AND MORE PRECIPITATION
EXISTS. STAY ALERT FOR LATEST UPDATES.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ORZ030-031-010100-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
548 AM PST MON FEB 28 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
OREGON.

.DAY ONE...TODAY AND TONIGHT

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM PST THIS EVENING.
PLEASE SEE LATEST WARNING MESSAGE FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER STRONG SYSTEM WILL MOVE TOWARDS THE COAST TUESDAY NIGHT.
THE POTENTIAL FOR ANOTHER ROUND OF STRONG WINDS WILL EXIST LATE
TUESDAY INTO WEDNESDAY. STAY ALERT FOR LATEST UPDATES.
.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

CAZ081-010100-
CENTRAL SISKIYOU COUNTY-
548 AM PST MON FEB 28 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN
CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

A WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. PLEASE
SEE LATEST WARNING MESSAGE FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER STRONG SYSTEM WILL MOVE TOWARDS THE COAST TUESDAY NIGHT.
THE POTENTIAL FOR ANOTHER ROUND OF STRONG WINDS AND MODERATE TO
HEAVY PRECIPITATION WILL EXIST LATE TUESDAY INTO WEDNESDAY. STAY
ALERT FOR LATEST UPDATES.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

CAZ080-ORZ024-025-027-010100-
WESTERN SISKIYOU COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-
EASTERN DOUGLAS COUNTY FOOTHILLS-SOUTH CENTRAL OREGON CASCADES-
548 AM PST MON FEB 28 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN
CALIFORNIA...SOUTH CENTRAL OREGON AND SOUTHWEST OREGON.

.DAY ONE...TODAY AND TONIGHT

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
TUESDAY. PLEASE SEE LATEST ADVISORY MESSAGE FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WITH ONLY A BRIEF BREAK DURING THE DAY TUESDAY...ANOTHER VERY
STRONG SYSTEM WILL APPROACH THE COAST LATE TUESDAY NIGHT. IT WILL
BRING THE POTENTIAL FOR EVEN STRONGER WINDS AND BOUTS OF MODERATE TO
HEAVY PRECIPITATION FROM LATE TUESDAY THROUGH WEDNESDAY. STAY
ALERT FOR THE LATEST UPDATES.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

OTTENWELLER

In the hours before

Local storm report, Feb 28, 9:31 AM PST, 5 hours 56 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 7:59 AM PSTGale WatchMFR20 hr
Feb 28, 7:59 AM PSTHazardous Seas WatchMFR20 hr
Feb 28, 12:49 PM PSTSmall Craft Advisory for WindsMFR33 hr
Feb 28, 3:53 PM PSTHigh Wind WatchMFRCoos, Curry, Douglas, Klamath, Lake11 hr

Nearby

Winter Storm Watches in California, 2011Every winter storm watch in 2011

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.