Alert archive / California / Red Flag Warnings in 2011
Red Flag Warning 6, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jul 24, 2011, 1:10 PM PDT for Washoe County, Nevada; Lassen County, Modoc County, California. It took effect at Jul 25, 2011, 12:00 PM PDT. It was in force for 9 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 24, 2011, 1:10 PM PDT (20:10 UTC)
- In effect from
- Jul 25, 2011, 12:00 PM PDT
- Expired
- Jul 25, 2011, 9:00 PM PDT
- In force
- 9 hr
- Issued by
- NWS Reno, NV
Counties Lassen County, CA, Modoc County, CA, Washoe County, NV
The radar
The Reno radar (KRGX), 154 km from the middle of the area, began a volume at 20:14 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
Reno, NV (KREV), launched 12:00Z, 8.2 hours before the alert went out and 239 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
- 2335 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
392 WWUS85 KREV 242010 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 110 PM PDT SUN JUL 24 2011 ...GUSTY WINDS WITH LOW HUMIDITY EXPECTED MONDAY... .LOW PRESSURE AND A WEAK COLD FRONT WILL REACH THE COAST MONDAY INCREASING WINDS ACROSS THE AREA. STRONG...GUSTY AFTERNOON WINDS ARE EXPECTED ACROSS THE DESERT AREAS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA. A DRY AIRMASS WILL ALSO MOVE INTO THE REGION MONDAY KEEPING AFTERNOON HUMIDITY LOW. LOW RELATIVE HUMIDITY AND GUSTY WINDS WILL COMBINE TO CREATE CRITICAL FIRE WEATHER CONDITIONS. CAZ270-278-NVZ450-458-251300- /O.UPG.KREV.FW.A.0005.110725T1900Z-110726T0400Z/ /O.NEW.KREV.FW.W.0006.110725T1900Z-110726T0400Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY- 110 PM PDT SUN JUL 24 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR THE DESERTS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... THE NATIONAL WEATHER SERVICE IN RENO HAS UPGRADED THE FIRE WEATHER WATCH TO A RED FLAG WARNING FOR GUSTY WINDS AND LOW HUMIDITY... WHICH IS IN EFFECT FROM NOON TO 9 PM PDT MONDAY. * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY...FIRE ZONE 450 WESTERN NEVADA SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * WINDS...WEST TO SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * HUMIDITY...8 TO 15 PERCENT DURING THE AFTERNOON AND EARLY EVENING. * IMPACTS...THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL CREATE CRITICAL FIRE WEATHER CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HOON HTTP://WEATHER.GOV/RENO
3 follow-up statements
402 WWUS85 KREV 251257 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 557 AM PDT MON JUL 25 2011 ...GUSTY WINDS WITH LOW HUMIDITY EXPECTED MONDAY... .LOW PRESSURE AND A WEAK COLD FRONT WILL REACH THE COAST TODAY INCREASING WINDS ACROSS THE AREA. STRONG...GUSTY AFTERNOON WINDS ARE EXPECTED ACROSS THE DESERT AREAS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA. A DRY AIRMASS WILL ALSO MOVE INTO THE REGION MONDAY KEEPING AFTERNOON HUMIDITY LOW. LOW RELATIVE HUMIDITY AND GUSTY WINDS WILL COMBINE TO CREATE CRITICAL FIRE WEATHER CONDITIONS. CAZ270-278-NVZ450-458-260100- /O.CON.KREV.FW.W.0006.110725T1900Z-110726T0400Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY- 557 AM PDT MON JUL 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE DESERTS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY...FIRE ZONE 450 WESTERN NEVADA SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * WINDS...WEST TO SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * HUMIDITY...6 TO 14 PERCENT DURING THE AFTERNOON AND EARLY EVENING. * IMPACTS...THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL CREATE CRITICAL FIRE WEATHER CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
761 WWUS85 KREV 252230 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 330 PM PDT MON JUL 25 2011 CAZ270-278-NVZ450-458-260400- /O.CON.KREV.FW.W.0006.000000T0000Z-110726T0400Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY- 330 PM PDT MON JUL 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE DESERTS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY...FIRE ZONE 450 WESTERN NEVADA SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * WINDS...WEST TO SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * HUMIDITY...6 TO 14 PERCENT WITH POOR RECOVERIES OVERNIGHT. * IMPACTS...THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL CREATE CRITICAL FIRE WEATHER CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
747 WWUS85 KREV 260339 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 839 PM PDT MON JUL 25 2011 CAZ270-278-NVZ450-458-260445- /O.EXP.KREV.FW.W.0006.000000T0000Z-110726T0400Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY- 839 PM PDT MON JUL 25 2011 ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE DESERTS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... THE RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING. WEST WINDS CONTINUE TO DECREASE AND THE RELATIVE HUMIDITY HAS STARTED TO RISE ACROSS THE AREA. CRITICAL FIRE WEATHER CONDITIONS HAVE EASED AND CONDITIONS WILL CONTINUE TO IMPROVE THROUGH THE LATE EVENING HOURS. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 9 PM. $$ HTTP://WEATHER.GOV/RENO
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 2:50 PM PDT | Lake Wind Advisory | REV | Churchill, Douglas, Lyon, Pershing, Washoe | 30 hr |
Nearby
Red Flag Warnings in California, 2011Red Flag Warnings in Nevada, 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.