Alert archive / Oregon / Red Flag Warnings in 2011
Red Flag Warning 2, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 21, 2011, 2:34 AM PDT for 6 counties in Oregon. It took effect at Aug 21, 2011, 2:00 PM PDT. It was in force for 6 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
- Aug 21, 2011, 2:34 AM PDT (09:34 UTC)
- In effect from
- Aug 21, 2011, 2:00 PM PDT
- Expired
- Aug 21, 2011, 8:00 PM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Douglas County, OR, Harney County, OR, Jackson County, OR, Josephine County, OR, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 111 km from the middle of the area, began a volume at 09:35 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 00:00Z, 9.6 hours before the alert went out and 97 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
- 3 J/kg
- Mixed-layer CIN
- -237 J/kg
- Mixed-layer LCL
- 3432 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
570 WWUS86 KMFR 210934 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 234 AM PDT SUN AUG 21 2011 .AN UPPER LEVEL LOW PRESSURE SYSTEM MOVING ACROSS THE AREA TODAY IS EXPECTED TO DEVELOP SCATTERED THUNDERSTORMS THIS AFTERNOON AND EVENING. THIS...COMBINED WITH DRY FUELS WILL LEAD TO A SIGNIFICANT POTENTIAL FOR FIRE STARTS. ORZ624-625-212300- /O.UPG.KMFR.FW.A.0004.110821T2100Z-110822T0600Z/ /O.NEW.KMFR.FW.W.0002.110821T2100Z-110822T0300Z/ KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST- SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES- 234 AM PDT SUN AUG 21 2011 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR LIGHTNING WITH INSUFFICIENT MOISTURE FOR FIRE ZONES 624 AND 625... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA: FIRE ZONES 624 AND 625 * THUNDERSTORMS...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER AND NEAR THE CASCADES TODAY...EXPANDING EASTWARD THIS AFTERNOON THROUGH THE EVENING. * OUTFLOW WINDS...OUTFLOW WIND GUSTS OF 25 TO 35 MPH ARE POSSIBLE WITH THESE STORMS. * IMPACTS...ABUNDANT LIGHTNING AND DRY FUELS WILL LEAD TO SIGNIFICANT POTENTIAL FOR FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. && $$ ORZ621-623-212300- /O.NEW.KMFR.FW.W.0002.110821T2100Z-110822T0300Z/ SISKIYOU MOUNTAINS-SOUTHERN OREGON CASCADES- 234 AM PDT SUN AUG 21 2011 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR LIGHTNING WITH INSUFFICIENT MOISTURE FOR FIRE ZONES 621 AND 623... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING. * AFFECTED AREA: FIRE ZONES 621 AND 623 * THUNDERSTORMS...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON. STORM MOTION IS EXPECTED TO BE FROM SOUTHEAST TO NORTHWEST AT 5 TO 10 MPH. * OUTFLOW WINDS...OUTFLOW WIND GUSTS OF 25 TO 35 MPH ARE POSSIBLE WITH THESE STORMS. * IMPACTS...ABUNDANT LIGHTNING AND DRY FUELS WILL LEAD TO SIGNIFICANT POTENTIAL FOR FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. && $$ SK VISIT US AT WWW.WEATHER.GOV/MEDFORD
2 follow-up statements
922 WWUS86 KMFR 220117 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 617 PM PDT SUN AUG 21 2011 ORZ621-623-220230- /O.CAN.KMFR.FW.W.0002.000000T0000Z-110822T0300Z/ SISKIYOU MOUNTAINS-SOUTHERN OREGON CASCADES- 617 PM PDT SUN AUG 21 2011 ...RED FLAG WARNING IS CANCELLED FOR LIGHTNING WITH INSUFFICIENT MOISTURE FOR FIRE ZONES 621 AND 623... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS CANCELLED THE RED FLAG WARNING. * AFFECTED AREA: FIRE ZONES 621 AND 623 * THUNDERSTORMS...AN ISOLATED THUNDERSTORM OR TWO MAY DEVELOP DURING THE REMAINDER OF THE EVENING...WITH THE HIGHEST PROBABILITY NEAR CRATER LAKE. $$ ORZ624-625-220300- /O.CON.KMFR.FW.W.0002.000000T0000Z-110822T0300Z/ KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST- SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES- 617 PM PDT SUN AUG 21 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR LIGHTNING WITH INSUFFICIENT MOISTURE FOR FIRE ZONES 624 AND 625... * AFFECTED AREA: FIRE ZONES 624 AND 625 * THUNDERSTORMS...ISOLATED TO SCATTERED COVERAGE OF THUNDERSTORMS IS EXPECTED TO CONTINUE FOR THE REMAINDER OF THE EVENING. THE HIGHEST PROBABILITY FOR THUNDERSTORMS IS IN THE VICINITY OF SUMMER LAKE AND SILVER LAKE. * OUTFLOW WINDS...OUTFLOW WIND GUSTS OF 25 TO 35 MPH ARE POSSIBLE WITH THESE STORMS. * IMPACTS...ABUNDANT LIGHTNING AND DRY FUELS WILL LEAD TO SIGNIFICANT POTENTIAL FOR FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. && $$ DW VISIT US AT WWW.WEATHER.GOV/MEDFORD
160 WWUS86 KMFR 220306 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 806 PM PDT SUN AUG 21 2011 ORZ624-625-220415- /O.EXP.KMFR.FW.W.0002.000000T0000Z-110822T0300Z/ KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST- SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES- 806 PM PDT SUN AUG 21 2011 ...RED FLAG WARNING HAS EXPIRED FOR LIGHTNING WITH INSUFFICIENT MOISTURE FOR FIRE ZONES 624 AND 625... THE RED FLAG WARNING FOR FIRE ZONES 624 AND 625 IS NO LONGER IN EFFECT. ACTIVITY HAS DIMINISHED BUT ISOLATED THUNDERSTORMS WILL LINGER IN NORTHERN KLAMATH COUNTY TILL AROUND 9 PM PDT. $$ DW VISIT US AT WWW.WEATHER.GOV/MEDFORD
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:38 PM PDT | Special Weather Statement | MFR | 52 min |
Nearby
Red Flag Warnings in Oregon, 2011Every red flag warning 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.