Alert archive / California / Red Flag Warnings in 2022
Red Flag Warning 21, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 25, 2022, 2:00 PM PDT for Modoc County, California. It took effect at Aug 26, 2022, 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 25, 2022, 2:00 PM PDT (21:00 UTC)
- In effect from
- Aug 26, 2022, 2:00 PM PDT
- Expired
- Aug 26, 2022, 8:00 PM PDT
- In force
- 6 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 20:57 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, 9.0 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
- 83 J/kg
- Mixed-layer CIN
- -715 J/kg
- Mixed-layer LCL
- 1496 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
111 WWUS86 KMFR 252100 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 200 PM PDT Thu Aug 25 2022 CAZ285-261200- /O.UPG.KMFR.FW.A.0017.220826T2100Z-220827T0300Z/ /O.NEW.KMFR.FW.W.0021.220826T2100Z-220827T0300Z/ Modoc County Except for the Surprise Valley- 200 PM PDT Thu Aug 25 2022 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT FRIDAY FOR STRONG GUSTY WIND AND LOW RH FOR CALIFORNIA FIRE WEATHER ZONE 285... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. The Fire Weather Watch is no longer in effect. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area...In CAZ285...Fire weather zone 285. * Wind...West to southwest 15 to 20 mph with gusts up to 30 mph. * Humidity...8 to 10 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds and low relative humidities will cause fires to spread very rapidly. && $$ Visit us at www.weather.gov/Medford
3 follow-up statements
144 WWUS86 KMFR 261200 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 500 AM PDT Fri Aug 26 2022 CAZ285-270300- /O.CON.KMFR.FW.W.0021.220826T2100Z-220827T0300Z/ Modoc County Except for the Surprise Valley- 500 AM PDT Fri Aug 26 2022 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 285... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area...Fire weather zone 285. * Wind...West to southwest 15 to 20 mph with gusts up to 30 mph. * Humidity...8 to 10 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds and low relative humidities will cause fires to spread very rapidly. && $$ Visit us at www.weather.gov/Medford
122 WWUS86 KMFR 262050 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 150 PM PDT Fri Aug 26 2022 CAZ285-270300- /O.CON.KMFR.FW.W.0021.220826T2100Z-220827T0300Z/ Modoc County Except for the Surprise Valley- 150 PM PDT Fri Aug 26 2022 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 285... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area...In CAZ285...Fire weather zone 285. * Wind...West to southwest 15 to 20 mph with gusts up to 30 mph. * Humidity...8 to 10 percent. * View the hazard area in detail at http://weather.gov/Medford/Hazard PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures could cause extreme fire growth potential to new or existing fires. && $$ Visit us at www.weather.gov/Medford
609 WWUS86 KMFR 270241 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 741 PM PDT Fri Aug 26 2022 CAZ285-270345- /O.EXP.KMFR.FW.W.0021.000000T0000Z-220827T0300Z/ Modoc County Except for the Surprise Valley- 741 PM PDT Fri Aug 26 2022 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 285... Winds and humidities are starting to improve, and critical fire weather conditions are no longer occuring, thus the Red Flag Warning will be allowed to expire. $$ 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 25, 4:51 AM PDT | Fire Weather Watch | MFR | Modoc | 9 hr |
Nearby
Red Flag Warnings in California, 2022Every red flag warning in 2022
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.