Alert archive / California / Red Flag Warnings in 2012
Red Flag Warning 5, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Jul 21, 2012, 8:58 PM PDT for Modoc County, California. It took effect at Jul 22, 2012, 1:00 PM 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
- Jul 21, 2012, 8:58 PM PDT (03:58 UTC)
- In effect from
- Jul 22, 2012, 1:00 PM PDT
- Expired
- Jul 22, 2012, 8:00 PM PDT
- In force
- 7 hr
- Issued by
- NWS Medford, OR
County Modoc County, CA
The radar
The Medford radar (KMAX), 174 km from the middle of the area, began a volume at 04:02 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, 4.0 hours before the alert went out and 192 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
- 2946 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
406 WWUS86 KMFR 220358 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 858 PM PDT SAT JUL 21 2012 .LOW PRESSURE ENTERING THE PACIFIC NORTHWEST SUNDAY WILL CAUSE WINDS TO INCREASE AND RELATIVE HUMIDITIES TO REMAIN LOW SUNDAY AFTERNOON AND EVENING. THIS IS COMBINATION WITH VERY DRY FUELS WILL RESULT IN THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. CAZ285-221600- /O.UPG.KMFR.FW.A.0003.120722T2000Z-120723T0300Z/ /O.NEW.KMFR.FW.W.0005.120722T2000Z-120723T0300Z/ MODOC COUNTY EXCEPT FOR THE SURPRISE VALLEY- 858 PM PDT SAT JUL 21 2012 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT SUNDAY FOR THE COMBINATION OF GUSTY WINDS AND LOW RELATIVE HUMIDITIES... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM TO 8 PM PDT SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA: FIRE ZONE 285. * WIND...SOUTHWEST WINDS WILL INCREASE AND BECOME WEST SUNDAY AFTERNOON AND EVENING WITH SPEEDS REACHING 15 TO 25 MPH WITH GUSTS 25 TO 35 MPH. * HUMIDITY...MINIMUM RELATIVE HUMIDITIES SUNDAY AFTERNOON ARE LIKELY TO BE IN 8 TO 15 PERCENT RANGE. * IMPACTS...THESE GUSTY WINDS AND LOW RELATIVE HUMIDITIES WILL RESULT IN THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. * ADDITIONAL INFORMATION...THE HAINES INDEX WILL BE 5 TO 6 ON SUNDAY WHICH IS MODERATE TO HIGH. 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. && $$ BTL VISIT US AT WWW.WEATHER.GOV/MEDFORD
3 follow-up statements
491 WWUS86 KMFR 221320 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 620 AM PDT SUN JUL 22 2012 .LOW PRESSURE ENTERING THE PACIFIC NORTHWEST TODAY WILL CAUSE WINDS TO INCREASE AND RELATIVE HUMIDITIES TO REMAIN LOW THIS AFTERNOON AND EVENING. THIS IN COMBINATION WITH VERY DRY FUELS WILL RESULT IN THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. WIND SPEEDS AND TEMPERATURES WILL NOT BE AS HIGH ON MONDAY. CAZ285-222300- /O.CON.KMFR.FW.W.0005.120722T2000Z-120723T0300Z/ MODOC COUNTY EXCEPT FOR THE SURPRISE VALLEY- 620 AM PDT SUN JUL 22 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR THE COMBINATION OF GUSTY WINDS AND LOW RELATIVE HUMIDITIES... * AFFECTED AREA: FIRE ZONE 285. * WIND...SOUTHWEST WINDS WILL INCREASE AND BECOME WEST THIS AFTERNOON AND EVENING WITH SPEEDS REACHING 15 TO 25 MPH WITH GUSTS OF 25 TO 35 MPH. * HUMIDITY...MINIMUM RELATIVE HUMIDITIES THIS AFTERNOON ARE FORECAST TO BE IN THE RANGE OF 8 TO 15 PERCENT. * IMPACTS...THESE GUSTY WINDS AND LOW RELATIVE HUMIDITIES WILL RESULT IN THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. * ADDITIONAL INFORMATION...THE HAINES INDEX WILL BE 5 TO 6 TODAY WHICH IS MODERATE TO HIGH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. && $$ DW VISIT US AT WWW.WEATHER.GOV/MEDFORD
332 WWUS86 KMFR 222218 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 318 PM PDT SUN JUL 22 2012 CAZ285-230300- /O.CON.KMFR.FW.W.0005.000000T0000Z-120723T0300Z/ MODOC COUNTY EXCEPT FOR THE SURPRISE VALLEY- 318 PM PDT SUN JUL 22 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR THE COMBINATION OF GUSTY WINDS AND LOW RELATIVE HUMIDITIES... * AFFECTED AREA: FIRE ZONE 285. * WIND...SOUTHWEST WINDS WILL CONTINUE AT 15 TO 25 MPH UNTIL 8 PM PDT THIS EVENING...WITH GUSTS OF 25 TO 35 MPH. * HUMIDITY...MINIMUM RELATIVE HUMIDITIES THIS AFTERNOON AND EARLY EVENING WILL BE IN THE RANGE OF 8 TO 15 PERCENT. * IMPACTS...THESE GUSTY WINDS AND LOW RELATIVE HUMIDITIES WILL RESULT IN THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. * ADDITIONAL INFORMATION...THE HAINES INDEX WILL BE 5 TO 6 TODAY WHICH IS MODERATE TO HIGH. 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. && $$ /FB VISIT US AT WWW.WEATHER.GOV/MEDFORD
864 WWUS86 KMFR 230254 RFWMFR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 754 PM PDT SUN JUL 22 2012 CAZ285-230400- /O.EXP.KMFR.FW.W.0005.000000T0000Z-120723T0300Z/ MODOC COUNTY EXCEPT FOR THE SURPRISE VALLEY- 754 PM PDT SUN JUL 22 2012 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR THE COMBINATION OF GUSTY WINDS AND LOW RELATIVE HUMIDITIES... THE RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING. * AFFECTED AREA: FIRE ZONE 285. * SUMMARY...WINDS WILL CONTINUE TO DIMINISH AND RELATIVE HUMIDITIES WILL CONTINUE TO RISE THIS EVENING SUCH THAT RED FLAG WARNING CONDITIONS WILL END BY 8 PM PDT THIS EVENING. $$ BTL VISIT US AT WWW.WEATHER.GOV/MEDFORD
Nearby
Red Flag Warnings in California, 2012Every red flag warning in 2012
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.