Alert archive / Oregon / Freeze Warnings in 2011
Freeze Warning 31, NWS Medford, OR
NWS Medford, OR issued this freeze warning at Dec 7, 2011, 2:44 PM PST for Coos County, Curry County, Douglas County, Oregon. It took effect at Dec 7, 2011, 11:00 PM PST. It was in force for 10 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
- Dec 7, 2011, 2:44 PM PST (22:44 UTC)
- In effect from
- Dec 7, 2011, 11:00 PM PST
- Expired
- Dec 8, 2011, 9:00 AM PST
- In force
- 10 hr
- Issued by
- NWS Medford, OR
Counties Coos County, OR, Curry County, OR, Douglas County, OR
The radar
The Medford radar (KMAX), 135 km from the middle of the area, began a volume at 22:49 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, 10.7 hours before the alert went out and 108 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1377 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Dec 7, 9:14 AM PST, 5 hours 30 minutes earlier.
Area forecast discussion, Dec 7, 9:14 AM PST, 5 hours 30 minutes before
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</html>Hazardous weather outlook, Dec 7, 4:20 AM PST, 10 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEDFORD OR 420 AM PST WED DEC 7 2011 ORZ021-071700- SOUTH CENTRAL OREGON COAST- 420 AM PST WED DEC 7 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST OREGON. .DAY ONE...TODAY AND TONIGHT A FREEZE WARNING IS IN EFFECT UNTIL 9 AM PST TODAY FOR LOCATIONS WITH LOW TEMPERATURES OF 32 DEGREES OR LOWER. A FROST ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR LOCATIONS WITH LOWS BETWEEN 33 AND 36 DEGREES. A FROST WATCH IS THEN IN EFFECT BEGINNING THIS EVENING AND LASTING THROUGH TONIGHT. PLEASE SEE THE WEATHER MESSAGE FOR MORE SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE FREEZE WATCH WILL BE IN EFFECT UNTIL THURSDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT NEEDED. ORZ022-071700- CURRY COUNTY COAST- 420 AM PST WED DEC 7 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST OREGON. .DAY ONE...TODAY AND TONIGHT A FREEZE WARNING IS IN EFFECT UNTIL 9 AM PST TODAY FOR LOCATIONS WITH LOW TEMPERATURES OF 32 DEGREES OR LOWER. A FROST ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR LOCATIONS WITH LOWS BETWEEN 33 AND 36 DEGREES. PLEASE SEE THE WEATHER MESSAGE FOR MORE SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO SIGNIFICANT WEATHER WILL OCCUR AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT NEEDED. ORZ023-024-026-029>031-071700- CENTRAL DOUGLAS COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY- JACKSON COUNTY-KLAMATH BASIN- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- 420 AM PST WED DEC 7 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL OREGON AND SOUTHWEST OREGON. .DAY ONE...TODAY AND TONIGHT AN AIR STAGNATION ADVISORY REMAINS IN EFFECT THROUGH TONIGHT. PLEASE SEE THE WEATHER MESSAGE FOR MORE SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT NEEDED.
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 7, 2:03 AM PST | Freeze Watch | MFR | Coos, Curry, Douglas | 13 hr |
| Dec 7, 8:59 AM PST | Frost Advisory | MFR | Coos, Curry, Douglas | 24 hr |
Nearby
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.