Alert archive / California / Red Flag Warnings in 2012
Red Flag Warning 2, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jan 18, 2012, 6:08 AM PST for 4 counties in California. It took effect at Jan 18, 2012, 7:00 AM PST. It was in force for 15 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
- Jan 18, 2012, 6:08 AM PST (14:08 UTC)
- In effect from
- Jan 18, 2012, 7:00 AM PST
- Expired
- Jan 18, 2012, 10:00 PM PST
- In force
- 15 hr
- Issued by
- NWS Reno, NV
Counties El Dorado County, CA, Nevada County, CA, Placer County, CA, Sierra County, CA
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 2.1 hours before the alert went out and 211 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
- 1048 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
082 WWUS85 KREV 181408 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 608 AM PST WED JAN 18 2012 ...VERY DRY WITH GUSTY WINDS NEAR THE SIERRA TODAY... .A VERY DRY AIR MASS HAS MOVED INTO EASTERN CALIFORNIA AND WESTERN NEVADA NEAR AND SOUTH OF INTERESTATE 80 THIS MORNING. WHILE CLOUD COVER WILL BE PLENTIFIUL...THE MOISTURE WILL BE CONFINED ABOVE RIDGE TOP LEVEL. THEREFORE...THE DRY CONDITIONS ARE EXPECTED TO REMAIN DURING THE DAY. WITH AN INCREASE IN WINDS THIS MORNING... CRITICAL CONDITIONS ARE EXPECTED TO LAST INTO THE EVENING HOURS. CAZ272-273-NVZ450-190215- /O.NEW.KREV.FW.W.0002.120118T1500Z-120119T0600Z/ GREATER LAKE TAHOE AREA-MONO-EASTERN ALPINE COUNTIES- WESTERN NEVADA SIERRA FRONT- 608 AM PST WED JAN 18 2012 ...RED FLAG WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR MONO COUNTY...EASTERN ALPINE COUNTY...THE TAHOE BASIN AND THE WESTERN NEVADA SIERRA FRONT DUE TO GUSTY WINDS AND LOW HUMIDITY... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING FOR GUSTY WIND AND LOW HUMIDITY...WHICH IS IN EFFECT UNTIL 10 PM PST THIS EVENING. * AFFECTED AREA...FIRE ZONE 272 GREATER LAKE TAHOE AREA...FIRE ZONE 273 MONO-EASTERN ALPINE COUNTIES AND FIRE ZONE 450 WESTERN NEVADA SIERRA FRONT. * WINDS...WEST TO SOUTHWEST 15 TO 30 MPH WITH GUSTS TO 45 MPH. LOCAL GUSTS TO 65 MPH ARE POSSIBLE IN WIND PRONE AREAS SUCH AS LITTLE VALLEY AND GALENA. * RIDGE WINDS...WEST 50 TO 70 MPH WITH GUSTS TO 110 MPH. * HUMIDITY...4 TO 14 PERCENT. HUMIDITY MAY BRIEFLY RISE IN THE AFTERNOON TO 20 PERCENT BEFORE FALLING AGAIN THIS 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. && $$ HTTP://WEATHER.GOV/RENO
2 follow-up statements
328 WWUS85 KREV 190157 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 557 PM PST WED JAN 18 2012 ...VERY DRY WITH GUSTY WINDS NEAR THE SIERRA THIS EVENING... .A VERY DRY AIR MASS HAS MOVED INTO EASTERN CALIFORNIA AND WESTERN NEVADA NEAR AND SOUTH OF INTERSTATE 80. WHILE CLOUD COVER IS PLENTIFUL...THE MOISTURE IS CONFINED ABOVE RIDGE TOP LEVEL. THEREFORE...THE DRY CONDITIONS ARE EXPECTED TO REMAIN THIS EVENING. STRONG WINDS WILL CONTINUE THIS EVENING...TAPERING OFF OVERNIGHT. CAZ272-273-NVZ450-190600- /O.CON.KREV.FW.W.0002.000000T0000Z-120119T0600Z/ GREATER LAKE TAHOE AREA-MONO-EASTERN ALPINE COUNTIES- WESTERN NEVADA SIERRA FRONT- 557 PM PST WED JAN 18 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR MONO COUNTY...EASTERN ALPINE COUNTY...THE TAHOE BASIN AND THE WESTERN NEVADA SIERRA FRONT DUE TO GUSTY WINDS AND LOW HUMIDITY... * AFFECTED AREA...FIRE ZONE 272 GREATER LAKE TAHOE AREA...FIRE ZONE 273 MONO-EASTERN ALPINE COUNTIES AND FIRE ZONE 450 WESTERN NEVADA SIERRA FRONT. * WINDS...WEST TO SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 35 MPH. WINDS WILL BEGIN TO DECREASE THIS EVENING...POSSIBLY BEFORE 10 PM. * RIDGE WINDS...WEST 50 TO 70 MPH WITH GUSTS TO 100 MPH. * HUMIDITY...7 TO 15 PERCENT. * IMPACTS...THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL CREATE CRITICAL FIRE WEATHER CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR OR ARE OCCURRING. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HOON HTTP://WEATHER.GOV/RENO
646 WWUS85 KREV 190552 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 952 PM PST WED JAN 18 2012 CAZ272-273-NVZ450-190700- /O.EXP.KREV.FW.W.0002.000000T0000Z-120119T0600Z/ GREATER LAKE TAHOE AREA-MONO-EASTERN ALPINE COUNTIES- WESTERN NEVADA SIERRA FRONT- 952 PM PST WED JAN 18 2012 ...RED FLAG WARNING WILL EXPIRE AT 10 PM PST THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR MONO COUNTY...EASTERN ALPINE COUNTY...THE TAHOE BASIN AND THE WESTERN NEVADA SIERRA FRONT DUE TO GUSTY WINDS AND LOW HUMIDITY... THE RED FLAG WARNING WILL EXPIRE AT 10 PM PST THIS EVENING. WINDS HAVE SUBSIDED ACROSS MOST OF THE AREA. A FEW MIDSLOPE RAWS CONTINUE TO GUST THIS EVENING BETWEEN 20 TO 30 MPH...WITH HUMIDITY VALUES BELOW 15%. EXPECT THAT SOME OF THESE AREAS WILL CONTINUE TO SEE NEAR CRITICAL CONDITIONS OVERNIGHT. WIDESPREAD POOR RECOVERIES CAN BE EXPECTED AS WELL. $$ HOON HTTP://WEATHER.GOV/RENO
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 3:49 PM PST | Wind Advisory | REV | Alpine, El Dorado, Lassen, Modoc, Nevada, Placer and 2 more | 36 hr |
Nearby
Red Flag Warnings in California, 2012Red Flag Warnings in Nevada, 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.