Alert archive / California / Red Flag Warnings in 2009
Red Flag Warning 8, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Sep 28, 2009, 11:47 AM PDT for 4 counties in California. It took effect at Sep 28, 2009, 11:00 PM PDT. It was in force for 21 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
- Sep 28, 2009, 11:47 AM PDT (18:47 UTC)
- In effect from
- Sep 28, 2009, 11:00 PM PDT
- Expired
- Sep 29, 2009, 8:00 PM PDT
- In force
- 21 hr
- Issued by
- NWS Reno, NV
Counties El Dorado County, CA, Nevada County, CA, Placer County, CA, Sierra County, CA
The radar
The Beale AFB radar (KBBX), 93 km from the middle of the area, began a volume at 18:47 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
Oakland, CA (KOAK), launched 12:00Z, 6.8 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
- 1405 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS85 KREV 281847 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 1147 AM PDT MON SEP 28 2009 NVZ453-290500- /O.UPG.KREV.FW.A.0009.090929T1500Z-090930T0000Z/ /O.NEW.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ /O.EXB.KREV.FW.W.0007.090928T2100Z-090929T0500Z/ WEST CENTRAL NEVADA BASIN AND RANGE- 1147 AM PDT MON SEP 28 2009 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY MAINLY FOR AREAS NORTH OF INTERSTATE 80... ...RED FLAG WARNING IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PDT THIS EVENING. A RED FLAG WARNING HAS ALSO BEEN ISSUED FROM 9 AM TO 5 PM PDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. WINDS WILL INCREASE THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. SOUTHWEST WINDS WILL INCREASE TO 15 TO 20 MPH WITH GUSTS TO 35 MPH. HUMIDITIES ARE ALREADY IN THE LOW TEENS AND ARE EXPECTED TO FALL INTO THE SINGLE DIGITS TODAY. A STRONG COLD FRONT WILL MOVE INTO PERSHING COUNTY MID-MORNING TUESDAY. GUSTY AND ERRATIC WINDS WILL OCCUR ALONG THE COLD FRONT. STRONG SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH ARE EXPECTED AHEAD OF THE FRONT WITH HUMIDITY NEAR 15 PERCENT. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE FRONT PASSES. THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY IS EXPECTED TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ273-290500- /O.UPG.KREV.FW.A.0009.090929T1500Z-090930T0000Z/ /O.NEW.KREV.FW.W.0008.090929T0600Z-090930T0000Z/ MONO-EASTERN ALPINE COUNTIES- 1147 AM PDT MON SEP 28 2009 ...RED FLAG WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM PDT TUESDAY FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 5 PM PDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. WINDS ARE EXPECTED TO INCREASE LATE TONIGHT FOR AREAS NORTH OF BRIDGEPORT. THESE AREAS WILL HAVE STRONG WINDS EVEN IN THE OVERNIGHT PERIOD...WITH LOW HUMIDITY VALUES BELOW 15 PERCENT. A STRONG COLD FRONT WILL APPROACH THE AREA ON TUESDAY. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH WILL BE POSSIBLE BY MID-MORNING THROUGH LATE AFTERNOON. THE COLD FRONT IS EXPECTED TO MOVE THROUGH THE AREA AROUND MID-AFTERNOON BRINGING GUSTY AND ERRATIC WINDS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE FRONT PASSES. GUSTY AND ERRATIC WINDS ALONG THE COLD FRONT COMBINED WITH LOW HUMIDITY WILL CAUSE CRITICAL FIRE WEATHER CONDITIONS TONIGHT AND TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ459-290500- /O.UPG.KREV.FW.A.0009.090929T1500Z-090930T0000Z/ /O.NEW.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ MINERAL AND SOUTHERN LYON COUNTIES- 1147 AM PDT MON SEP 28 2009 ...RED FLAG WARNING IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. A STRONG COLD FRONT WILL APPROACH THE AREA BY MID-MORNING TUESDAY. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH ARE POSSIBLE BEGINNING MID-MORNING TUESDAY AND CONTINUING THROUGH THE AFTERNOON. GUSTY AND ERRATIC WINDS ARE EXPECTED ALONG THE COLD FRONT AS IT MOVES THROUGH THE AREA. HUMIDITY WILL DROP TO NEAR 15 PERCENT DURING THE MORNING AND REMAIN LOW INTO THE AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE FRONT PASSES. GUSTY AND ERRATIC WINDS ALONG THE COLD FRONT COMBINED WITH LOW HUMIDITY WILL CAUSE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ450-290500- /O.UPG.KREV.FW.A.0009.090929T1500Z-090930T0000Z/ /O.EXT.KREV.FW.W.0007.090928T1900Z-090930T0000Z/ WESTERN NEVADA SIERRA FRONT- 1147 AM PDT MON SEP 28 2009 ...RED FLAG WARNING NOW IN EFFECT UNTIL 5 PM PDT TUESDAY FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 5 PM PDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. A STRONG COLD FRONT WILL APPROACH THE AREA AND BRING GUSTY WINDS TO THE SIERRA FRONT TODAY. SOUTHWEST WINDS WILL INCREASE WITH GUSTS UP TO 35 MPH THIS AFTERNOON AND EVENING. DRY CONDITIONS WILL PERSIST WITH HUMIDITY 5 TO 15 PERCENT ACROSS MUCH OF THE AREA. THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS. WINDS ON THE FOOTHILLS AND MIDSLOPES ARE EXPECTED TO CONTINUE OVERNIGHT WITH LOW HUMIDITY AROUND 15 PERCENT. WEST WINDS INCREASE TUESDAY MORNING WITH SPEEDS OF 20 TO 35 MPH AND GUSTS TO 50 MPH. GUSTY AND ERRATIC WINDS ARE EXPECTED AS THE COLD FRONT PASSES MID-DAY. THESE WINDS COMBINED WITH LOW HUMIDITY WILL CAUSE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ270-271-278-NVZ458-290500- /O.CON.KREV.FW.W.0007.090928T1900Z-090929T0500Z/ SURPRISE VALLEY CALIFORNIA-WESTERN LASSEN-EASTERN PLUMAS- EASTERN SIERRA-EASTERN NEVADA COUNTIES-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 1147 AM PDT MON SEP 28 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING. A STRONG COLD FRONT WILL APPROACH THE AREA AND BRING GUSTY WINDS TO THE NORTHEAST CALIFORNIA AND NORTHWEST NEVADA TODAY. SOUTHWEST WINDS WILL INCREASE WITH GUSTS OF 30 TO 35 MPH THIS AFTERNOON AND EVENING AHEAD OF THE FRONT. DRY CONDITIONS WILL PERSIST AHEAD OF THE FRONT WITH HUMIDITY 10 TO 15 PERCENT ACROSS MUCH OF THE AREA. THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY WILL PRODUCE 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. && $$ HTTP://WEATHER.GOV/RENO
5 follow-up statements
000 WWUS85 KREV 290510 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 1010 PM PDT MON SEP 28 2009 NVZ453-291900- /O.EXP.KREV.FW.W.0007.000000T0000Z-090929T0500Z/ /O.CON.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ WEST CENTRAL NEVADA BASIN AND RANGE- 1010 PM PDT MON SEP 28 2009 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... THE RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY. A STRONG COLD FRONT WILL MOVE INTO PERSHING COUNTY BY MID MORNING TUESDAY AND PUSH TO THE SOUTHEAST DURING THE DAY. STRONG SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH ARE EXPECTED AHEAD OF THE FRONT WITH HUMIDITY NEAR 15 PERCENT. THIS COMBINATION OF GUSTY WINDS AND LOW HUMIDITY IS EXPECTED TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY TUESDAY EVENING AFTER THE COLD FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ270-271-278-NVZ458-290615- /O.EXP.KREV.FW.W.0007.000000T0000Z-090929T0500Z/ SURPRISE VALLEY CALIFORNIA-WESTERN LASSEN-EASTERN PLUMAS- EASTERN SIERRA-EASTERN NEVADA COUNTIES-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 1010 PM PDT MON SEP 28 2009 ...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING. WINDS WILL CONTINUE TO SLOWLY DIMINISH THROUGH MIDNIGHT. HOWEVER...RELATIVE HUMIDITY VALUES WILL REMAIN LOW OVERNIGHT... ESPECIALLY ON THE MID SLOPES. $$ NVZ450-291900- /O.CON.KREV.FW.W.0007.000000T0000Z-090930T0000Z/ WESTERN NEVADA SIERRA FRONT- 1010 PM PDT MON SEP 28 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT TUESDAY FOR GUSTY ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT TUESDAY. A STRONG COLD FRONT WILL APPROACH THE AREA AND BRING GUSTY WINDS TO THE SIERRA FRONT LATE TONIGHT. SOUTHWEST WIND GUSTS WILL BRIEFLY DECREASE TO LESS THAN 30 MPH...THEN INCREASE AGAIN BEFORE SUNRISE. RELATIVE HUMIDITY VALUES WILL REMAIN LOW OVERNIGHT WITH RECOVERIES ON THE MID SLOPES AROUND 15 PERCENT. WEST WINDS WILL INCREASE TUESDAY MORNING WITH SPEEDS OF 20 TO 35 MPH AND GUSTS TO 50 MPH. GUSTY AND ERRATIC WINDS ARE EXPECTED AS THE COLD FRONT PASSES THROUGH AROUND MIDDAY. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THROUGH TUESDAY AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY TUESDAY EVENING AFTER THE COLD FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ273-291900- /O.CON.KREV.FW.W.0008.090929T0600Z-090930T0000Z/ MONO-EASTERN ALPINE COUNTIES- 1010 PM PDT MON SEP 28 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT TUESDAY FOR GUSTY ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT TUESDAY. WINDS ARE EXPECTED TO INCREASE LATE TONIGHT FOR AREAS NORTH OF BRIDGEPORT. THESE AREAS WILL HAVE STRONG WINDS EVEN IN THE OVERNIGHT PERIOD...WITH LOW HUMIDITY VALUES BELOW 15 PERCENT. A STRONG COLD FRONT WILL APPROACH THE AREA ON TUESDAY. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED FROM MID MORNING THROUGH LATE AFTERNOON. THE COLD FRONT IS EXPECTED TO MOVE THROUGH THE AREA AROUND MID AFTERNOON BRINGING GUSTY AND ERRATIC WINDS. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THROUGH TUESDAY AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY TUESDAY EVENING AFTER THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ459-291900- /O.CON.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ MINERAL AND SOUTHERN LYON COUNTIES- 1010 PM PDT MON SEP 28 2009 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY FOR GUSTY ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 5 PM PDT TUESDAY. A STRONG COLD FRONT WILL APPROACH THE AREA BY MID MORNING TUESDAY. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED FROM MID MORNING THROUGH LATE AFTERNOON. GUSTY AND ERRATIC WINDS ARE EXPECTED ALONG THE COLD FRONT AS IT MOVES THROUGH THE AREA DURING THE AFTERNOON. HUMIDITY WILL DROP TO NEAR 15 PERCENT DURING THE MORNING AND REMAIN LOW INTO THE AFTERNOON. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY TUESDAY EVENING AFTER THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ MJD/MLF HTTP://WEATHER.GOV/RENO
000 WWUS85 KREV 291348 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 648 AM PDT TUE SEP 29 2009 CAZ272-300000- /O.EXA.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ GREATER LAKE TAHOE AREA- 648 AM PDT TUE SEP 29 2009 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. SOUTHWEST WINDS ARE EXPECTED TO INCREASE AHEAD OF A STRONG COLD FRONT THIS MORNING WITH SPEEDS OF 20 TO 30 MPH AND GUSTS TO 50 MPH BY NOON. WIND PRONE AREAS SUCH AS BLISS STATE PARK COULD SEE GUSTS AS HIGH AS 60 MPH. IN ADDITION...HUMIDITY WILL HOVER NEAR 20 PERCENT THROUGH MID AFTERNOON BEFORE THE COLD FRONT MOVES THROUGH.VTHESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY LATE THIS AFTERNOON AFTER THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ453-300000- /O.CON.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ WEST CENTRAL NEVADA BASIN AND RANGE- 648 AM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR STRONG WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL MOVE INTO PERSHING COUNTY BY MID MORNING AND PUSH SOUTHEAST DURING THE DAY. STRONG SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 55 MPH ARE EXPECTED AHEAD OF THE FRONT WITH HUMIDITY NEAR 15 PERCENT. THIS COMBINATION OF STRONG WINDS AND LOW HUMIDITY IS EXPECTED TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON TUESDAY. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE COLD FRONT EXITS THE REGION WITH LIGHTER WINDS AND HIGHER HUMIDITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ450-300000- /O.CON.KREV.FW.W.0007.000000T0000Z-090930T0000Z/ WESTERN NEVADA SIERRA FRONT- 648 AM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR STRONG WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL APPROACH THE AREA AND MOVE THROUGH THIS AFTERNOON. SOUTHWEST WINDS WILL CONTINUE TO INCREASE THIS MORNING WITH SPEEDS OF 25 TO 40 MPH AND GUSTS TO 55 MPH. GUSTS IN WIND PRONE AREAS SUCH AS GALENA AND WASHOE VALLEY WILL SEE GUSTS TO 65 MPH. RELATIVE HUMIDITY VALUES WILL REMAIN 15 TO 20 PERCENT THROUGH MID AFTERNOON BEFORE INCREASING BEHIND THE COLD FRONT. GUSTY AND ERRATIC WINDS ARE EXPECTED AS THE COLD FRONT PASSES THROUGH AROUND MIDDAY. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE COLD FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ273-300000- /O.CON.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ MONO-EASTERN ALPINE COUNTIES- 648 AM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL APPROACH THE AREA ON TODAY. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH WILL DEVELOP BY MID MORNING AND CONTINUE THROUGH LATE AFTERNOON. IN ADDITION...HUMIDITY WILL BE FROM 15 TO 20 PERCENT ACROSS THE AREA AHEAD OF THE FRONT. THE COLD FRONT IS EXPECTED TO MOVE THROUGH THE AREA AROUND MID AFTERNOON BRINGING GUSTY AND ERRATIC WINDS. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS AFTERNOON. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ459-300000- /O.CON.KREV.FW.W.0008.090929T1600Z-090930T0000Z/ MINERAL AND SOUTHERN LYON COUNTIES- 648 AM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL APPROACH THE AREA BY MID MORNING. STRONG SOUTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED FROM MID MORNING THROUGH LATE AFTERNOON. GUSTY AND ERRATIC WINDS ARE EXPECTED ALONG THE COLD FRONT AS IT MOVES THROUGH THE AREA DURING THE AFTERNOON. HUMIDITY WILL DROP REMAIN NEAR 15 PERCENT INTO THE AFTERNOON. THESE WINDS COMBINED WITH LOW HUMIDITY WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS TODAY. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AFTER THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO WALLMANN
000 WWUS85 KREV 292236 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 336 PM PDT TUE SEP 29 2009 CAZ272-300000- /O.CON.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ GREATER LAKE TAHOE AREA- 336 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. SOUTHWEST WINDS 20 TO 30 MPH AND GUSTS TO 50 MPH WILL CONTINUE THROUGH THE THE REST OF THE AFTERNOON. WIND PRONE AREAS SUCH AS BLISS STATE PARK COULD SEE GUSTS AS HIGH AS 60 MPH. IN ADDITION...HUMIDITY WILL HOVER NEAR 20 PERCENT BEFORE THE COLD FRONT MOVES THROUGH. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AS THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ453-300000- /O.CON.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ WEST CENTRAL NEVADA BASIN AND RANGE- 336 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL CONTINUE MOVING THROUGH THE AREA THIS AFTERNOON. STRONG SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 55 MPH ARE EXPECTED AHEAD OF THE FRONT WITH HUMIDITY NEAR 15 PERCENT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AS THE FRONT EXITS THE REGION WITH LIGHTER WINDS AND HIGHER HUMIDITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ450-300000- /O.CON.KREV.FW.W.0007.000000T0000Z-090930T0000Z/ WESTERN NEVADA SIERRA FRONT- 336 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL CONTINUE TO MOVE THROUGH THIS AFTERNOON. SOUTHWEST WINDS 30 TO 40 MPH AND GUSTS TO 55 MPH. GUSTS IN WIND PRONE AREAS SUCH AS GALENA AND WASHOE VALLEY WILL SEE GUSTS TO 60 MPH. RELATIVE HUMIDITY VALUES WILL REMAIN 15 TO 20 PERCENT BEFORE INCREASING BEHIND THE COLD FRONT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AS THE COLD FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ CAZ273-300000- /O.CON.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ MONO-EASTERN ALPINE COUNTIES- 336 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL CONTINUE TO MOVE THROUGH THE AREA THIS AFTERNOON. STRONG WINDS OF 20 TO 35 MPH WITH GUSTS TO 65 MPH WILL CONTINUE THROUGH LATE AFTERNOON. IN ADDITION... HUMIDITY WILL BE FROM 15 TO 20 PERCENT ACROSS THE AREA AHEAD OF THE FRONT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AS THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ459-300000- /O.CON.KREV.FW.W.0008.000000T0000Z-090930T0000Z/ MINERAL AND SOUTHERN LYON COUNTIES- 336 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR GUSTY AND ERRATIC WINDS ALONG A COLD FRONT... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON. A STRONG COLD FRONT WILL CONTINUE TO MOVE THROUGH THE AREA THIS EVENING. STRONG SOUTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS TO 55 MPH ARE EXPECTED THROUGH LATE AFTERNOON. HUMIDITY WILL REMAIN NEAR 15 PERCENT AHEAD OF THE FRONT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE BY EARLY EVENING AS THE FRONT EXITS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
000 WWUS85 KREV 292339 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 439 PM PDT TUE SEP 29 2009 CAZ272-273-NVZ453-459-300300- /O.EXT.KREV.FW.W.0008.000000T0000Z-090930T0300Z/ GREATER LAKE TAHOE AREA-MONO-EASTERN ALPINE COUNTIES- WEST CENTRAL NEVADA BASIN AND RANGE- MINERAL AND SOUTHERN LYON COUNTIES- 439 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR GUSTY ERRATIC WINDS ALONG A COLD FRONT... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 8 PM PDT THIS EVENING. A STRONG COLD FRONT WILL CONTINUE MOVING THROUGH THE AREA EARLY THIS EVENING. STRONG SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH ARE EXPECTED. GUSTS IN WIND PRONE AREAS COULD REACH 60 MPH. HUMIDITY WILL GENERALLY REMAIN AROUND 20 PERCENT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE THROUGH THE EVENING AS THE FRONT EXITS THE REGION. WINDS WILL DECREASE BY 8 PM AND HUMIDITY WILL INCREASE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ NVZ450-300300- /O.EXT.KREV.FW.W.0007.000000T0000Z-090930T0300Z/ WESTERN NEVADA SIERRA FRONT- 439 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR GUSTY ERRATIC WINDS ALONG A COLD FRONT... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 8 PM PDT THIS EVENING. A STRONG COLD FRONT WILL CONTINUE TO MOVE THROUGH EARLY THIS EVENING. SOUTHWEST WINDS 30 TO 40 MPH AND GUSTS TO 55 MPH WILL CONTINUE INTO THE EARLY EVENING. WIND PRONE AREAS SUCH AS GALENA AND WASHOE VALLEY WILL SEE GUSTS TO 60 MPH. RELATIVE HUMIDITY VALUES WILL REMAIN 15 TO 20 PERCENT BEFORE INCREASING BEHIND THE COLD FRONT. GUSTY AND ERRATIC WINDS COMBINED WITH LOW HUMIDITY WILL CONTINUE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. CONDITIONS ARE EXPECTED TO IMPROVE THROUGH THE EVENING AS THE COLD FRONT EXITS THE REGION. WINDS WILL DECREASE BY 8 PM AND HUMIDITY WILL INCREASE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
000 WWUS85 KREV 300252 RFWREV RED FLAG WARNING NATIONAL WEATHER SERVICE RENO NV 752 PM PDT TUE SEP 29 2009 CAZ272-273-NVZ453-459-300400- /O.EXP.KREV.FW.W.0008.000000T0000Z-090930T0300Z/ GREATER LAKE TAHOE AREA-MONO-EASTERN ALPINE COUNTIES- WEST CENTRAL NEVADA BASIN AND RANGE- MINERAL AND SOUTHERN LYON COUNTIES- 752 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING. WINDS WILL DECREASE THROUGH THE EVENING AS A COLD FRONT MOVES SOUTH OF THE AREA. WHILE A FEW AREAS WILL CONTINUE TO EXPERIENCE WIND GUSTS OF 30 TO 35 MPH THROUGH MIDNIGHT...THESE CONDITIONS WILL NOT BE WIDESPREAD. AS THE COLD FRONT MOVES SOUTH TEMPERATURES WILL DROP AND THE HUMIDITY WILL INCREASE THIS EVENING AND OVERNIGHT. $$ NVZ450-300400- /O.EXP.KREV.FW.W.0007.000000T0000Z-090930T0300Z/ WESTERN NEVADA SIERRA FRONT- 752 PM PDT TUE SEP 29 2009 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING. GUSTY WINDS WILL DECREASE THROUGH THE EVENING AS A COLD FRONT MOVES SOUTH OF THE AREA. WHILE A FEW AREAS WILL CONTINUE TO EXPERIENCE WIND GUSTS UP TO 35 MPH THROUGH MIDNIGHT...THESE CONDITIONS WILL BE VERY LOCALIZED. AS THE COLD FRONT MOVES SOUTH TEMPERATURES WILL DROP AND THE HUMIDITY WILL INCREASE THIS EVENING AND OVERNIGHT. $$ MLF/MJD HTTP://WEATHER.GOV/RENO
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before this red flag warning went out at Sep 28, 6:38 AM PDT, 5 hours 9 minutes earlier.
Area forecast discussion, Sep 28, 6:38 AM PDT, 5 hours 9 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE RENO NV
638 AM PDT MON SEP 28 2009
UPDATED FOR FIRE WEATHER DISCUSSION
.FIRE WEATHER...
RED FLAG FOR TODAY STILL LOOKS GOOD AND SOMEWHAT MORE MOIST AIR
REALLY HAS YET TO WORK INTO THE REGION SO RH WILL BE SINGLE DIGITS
IN SOME AREAS AGAIN WITH MOST MINS NEAR 10%. EXPECT THE WINDS TO
DIMINISH DURING THE EVENING EXCEPT FOR SOME WIND PRONE AREAS ALONE
THE SIERRA FRONT. RH WILL ALSO INCREASE INTO THE 20S FOR MOST
AREAS IF NOT HIGHER. DO NOT SEE MUCH OF A DOWNSLOPE SIGNATURE FOR
WINDS OVERNIGHT ALONG SIERRA FRONT SO SEE NO NEED TO CONTINUE RED
FLAG BEYOND CURRENT VALID TIME DESPITE RH IN 20S.
FOR TUESDAY...FRONT IS COMING IN SLOWER AND MAY NOT PASS I-80
UNTIL AROUND NOON AND SOUTHERN ZONES UNTIL 5-6 PM. IN
ADDITION...SOME DOWNSLOPE SIGNATURES SHOWING UP IN MODELS ALONG
SIERRA FRONT/MONO COUNTY 2-3 HRS PRIOR TO FRONTAL PASSAGE. THIS
SHOULD ENHANCE WINDS A BIT IN THESE AREAS. EVEN IF IT DOESNT STG
THERMAL/PRESSURE GRADIENTS WILL BE ENOUGH FOR WIND GUSTS TO 45 MPH
IF NOT STRONGER AND SUSTAINED WINDS AROUND 25 MPH. WHILE RH WILL
ONLY DROP TO 18-20% NEAR 80/HWY 50 CORRIDORS...STRENGTH OF THE
WIND COULD STILL CAUSE ISSUES...ESPECIALLY COMING OF THE EXTREMELY
DRY PERIOD WE JUST HAD. HAVE ADDED 450/453 TO THE WATCH THAT WILL
RUN FROM 8AM-5PM. WINDS MAY START EVEN EARLIER FOR ZONE
450...PERHAPS AS EARLY AS 6AM IF FRONT IS SLIGHTLY FASTER THAN
EXPECTED. FURTHER SOUTH...RH DOWN TO NEAR 15% WITH SIMILAR WINDS
THAT SHOULD LAST LONGER. BEHIND FRONT...WINDS WILL SHIFT TO
NORTHWEST AND CONTINUE TO BE BREEZY ALTHOUGH NOT QUITE AS STRONG
AS AHEAD OF THE FRONT...BUT RH SHOULD RISE SIGNIFICANTLY TO NEAR
30% AT LEAST. MUCH COOLER TEMPS/HIGHER RH FOR WEDNESDAY. WALLMANN
&&
.PREVIOUS DISCUSSION... /ISSUED 400 AM PDT MON SEP 28 2009/
SHORT TERM...
THE CHANGE TO A MUCH COOLER AND WINDY WEATHER PATTERN IS STILL
SET TO OCCUR DURING THE NEXT COUPLE OF DAYS AS THE RIDGE WHICH
BROUGHT A FEW DAYS OF RECORD HIGH TEMPS WILL FINALLY YIELD TO AN
UNSEASONABLY STRONG TROF APPROACHING THE WEST COAST. THE MAIN
EFFECT TODAY WILL BE AN INCREASE IN SOUTHWEST WINDS AS 500 MB
HEIGHTS BEGIN TO FALL WHILE SFC PRESSURE GRADIENT TIGHTENS. WHILE
TEMPS WILL BEGIN TO DROP IN HIGHER ELEVATIONS BY THIS
AFTERNOON...MOST VALLEYS WILL REMAIN QUITE WARM WITH HIGHS RANGING
FROM THE MID 80S TO LOWER 90S AS FULL MIXING OCCURS WITH THE
INCREASED WINDS. WINDS WILL REMAIN LOCALLY GUSTY THRU THE
OVERNIGHT HOURS ESPECIALLY IN HIGHER ELEVATIONS. AS A RESULT...THE
LAKE WIND ADVY WHICH IS BEING ISSUED FOR TAHOE STARTING THIS
AFTERNOON WILL BE CARRIED THRU THE OVERNIGHT HOURS.
THE TROF IS EXPECTED TO MOVE ONSHORE BY TUES MORNING WITH COLD
FRONT PUSHING ACROSS ERN CA AND WRN NV DURING THE DAY. THE
STRONGEST WINDS WILL OCCUR AHEAD OF THE FRONT PASSAGE WITH GUSTS
OF 45 MPH OR HIGHER POSSIBLE ACROSS MUCH OF THE REGION. THERE ARE
MINOR TIMING DIFFERENCES AMONG THE LATEST GUIDANCE DATA WHICH
COULD RESULT IN THE FRONT NOT CLEARING SOME AREAS SOUTH OF HWY
50 UNTIL LATE AFTN OR EARLY EVENING. WHILE STRONG FRONTOGENESIS
ALOFT COULD TRIGGER SOME SHOWERS IN PORTIONS OF NERN CA-NWRN NV
BY TUES AFTN AND INTO PARTS OF W-CNTRL NV TUES EVE...THE POTENTIAL
FOR MEASURABLE RAINFALL WILL BE RATHER LOW DUE TO THE EXPECTED
FAST CELL MOVEMENT AND QUICK DEPARTURE OF THIS FORCING TO CNTRL-
ERN NV BY EARLY TUES EVE. THE COOLING EFFECTS OF THE FRONT WILL
DEFINITELY BE NOTICED WITH MANY AREAS 15-25 DEGREES COLDER THAN
TODAY...EXCEPT ABOUT 10 DEGREES COOLER FOR THE SRN MINERAL-MONO
ZONES DUE TO THE POSSIBLE DELAY IN FRONTAL PASSAGE AS MENTIONED
ABOVE.
BY WEDNESDAY...A FEW VERY LIGHT SHOWERS MAY AFFECT ERN PERSHING-
CHURCHILL COUNTIES IN THE MORNING UNDER THE MID LEVEL CYCLONIC
FLOW...OTHERWISE DRY CONDITIONS WILL PREVAIL ACROSS THE REGION
WITH MAX TEMPS EVEN COOLER THAN TUESDAY AS WINDS SHIFT TO THE
NORTHWEST AND NORTH. SOME VALLEY SITES MAY FAIL TO REACH 60
DEGREES ESPECIALLY IF ENOUGH STRATOCUMULUS PERSISTS INTO THE
AFTERNOON. WHILE WINDS WILL NOT BE NEARLY AS STRONG COMPARED TO
TUESDAY...GUSTS BETWEEN 20 AND 30 MPH WILL GIVE THE REGION
CHILLY FALL CONDITIONS MORE COMMON FOR LATE OCTOBER OR EARLY
NOVEMBER.
THE POTENTIAL FOR FREEZING TEMPS WILL INCREASE WED NIGHT AS
SKIES CLEAR AND WINDS DECOUPLE IN MOST VALLEYS. HARD FREEZE
CONDITIONS COULD OCCUR IN MANY LOCATIONS AWAY FROM URBAN AREAS.
MJD
LONG TERM...THURSDAY THROUGH SUNDAY...
AFTER SHORT WAVE RIDGING THU/FRI...NEXT TROUGH TO MOVE TOWARD THE
AREA FOR THE WEEKEND. THU SHOULD REMAIN COOL FOR WRN NV VALLEYS
UNDER LLVL E-NE FLOW AND STG SUBSIDENCE INVERSION. SIERRA SHOULD
SEE A BIT MORE OF A WARMUP DUE TO HIGHER ELEVATIONS BETTER ABLE TO
MIX INTO INVERSION. FRI...FLOW BEGINS TO SWITCH TO WEST AHEAD OF
APPROACHING TROF FROM THE NORTH ALLOWING FOR A BIT MORE WARMING.
TEMPS LOOK TO PEAK IN MID 70S WRN NV TO JUST SHORT OF 70 IN SIERRA
VALLEYS...CLOSE TO NORMAL.
COLD FRONT EXPECTED TO MOVE SOUTH OF THE OREGON BORDER SAT AFTERNOON
AND PUSH SLOWLY SOUTHWARD AND THROUGH THE AREA INTO SUNDAY
AFTERNOON. WITH A SLIGHTLY FURTHER WEST TRAJECTORY AND SLOWER
MOVEMENT...THIS TROUGH LOOKS A BIT WETTER THAN TUE/TUE NIGHTS.
HOWEVER...ALL PRECIP LOOKS TO BE POST-FRONTAL TYPICAL OF EARLY
AUTUMN SYSTEMS. WINDS WILL BE A BIT BREEZY SAT AHEAD OF THE FRONT
BUT NOT AS STRONG AS TODAY/TUE WITH PK GUSTS TO 35 MPH OR SO.
AS FRONT PUSHES SOUTH...EXPECT A DECENT BAND OF PRECIP TO DEVELOP
JUST BEHIND IT NORTH OF SUSANVILLE-GERLACH SO HAVE CONTINUE WITH
HIGHER CHC POPS THERE AND SLIGHT CHC FURTHER SOUTH. FGEN DOES NOT
LOOK AS STG AS THE FRONT DROPS FURTHER SOUTH INTO SUN ALTHOUGH THIS
IS STILL UP IN THE AIR. OVERALL HIGH CONFIDENCE IN THE PATTERN
ITSELF WITH MILD WEATHER LATE WEEK TURNING MUCH BELOW NORMAL AGAIN
FOR THE WEEKEND. STILL CONSIDERABLE UNCERTAINTY THOUGH WITH
AMOUNT/LOCATION AND COVERAGE OF PRECIP FOR THE WKEND. WALLMANN
AVIATION...
INCREASING SW FLOW EXPECTED TODAY WITH PK GUSTS TO 25 KTS AT
KTVL/KLOL/KTRK. KRNO WL SEE A BIT STRONGER WINDS GUSTING TO 30-35
KTS. DO NOT SEE MUCH TURBULENCE/SHEAR THIS AFTERNOON AS ATMOSPHERE
WILL BE WELL-MIXED.
THAT CHANGES TONIGHT AS WINDS ALOFT INCREASE WITH RIDGE WINDS OVER
TAHOE/RENO AREAS OF 50 KTS BY 12Z. EXPECT MORE TURBULENCE AND WIND
SHEAR AFT 06Z TONIGHT FOR KTVL/KTRK/KRNO. KLOL WILL SEE LESS OF AN
EFFECT WITH SHEAR LAYER AT LEAST 3 KFT AGL. FOR TUE...12-18Z TIME
LOOKS TO BE WORST FOR WIND SHEAR/STGEST WINDS. KTVL/KTRK/KRNO COULD
SEE PK GUSTS TO 40 KTS ATTM. DOWNSLOPE POTENTIAL IS LOW-MODERATE
WITH SOME ENHANCEMENT. HOWEVER...TEMP PROFILE NOT THE MOST FAVORABLE
FOR DOWNSLOPE WINDS SO EXPECT THESE TO BE MORE LOCALIZED AND THE STG
TEMP/PRESSURE GRADIENTS MORE THE DIVING FACTOR FOR WINDS. ABT 10-20
PCT CHC OF A MORE WIDESPREAD DOWNSLOPE EVENT WITH CONSIDERABLE SHEAR
SO DO NOT SEE IT AS A BIG FACTOR ATTM. WALLMANN
&&
.REV WATCHES/WARNINGS/ADVISORIES...
NV...RED FLAG WARNING FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR
NVZ450-458.
FIRE WEATHER WATCH FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON FOR NVZ450-453-459.
LAKE WIND ADVISORY FROM 2 PM THIS AFTERNOON TO 8 PM PDT TUESDAY
FOR NVZ002.
LAKE WIND ADVISORY FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS
EVENING FOR NVZ004.
CA...RED FLAG WARNING FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR
CAZ270-271-278.
FIRE WEATHER WATCH FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON FOR CAZ273.
LAKE WIND ADVISORY FROM 2 PM THIS AFTERNOON TO 8 PM PDT TUESDAY
FOR CAZ072.
&&
HTTP://WEATHER.GOV/RENOThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 3:29 PM PDT | Blowing Dust Advisory | REV | Churchill, Lyon, Mineral, Pershing, Washoe | 29 hr |
| Sep 28, 3:29 PM PDT | Wind Advisory | REV | Douglas, Lyon, Storey, Washoe | 29 hr |
Nearby
Red Flag Warnings in California, 2009Red Flag Warnings in Nevada, 2009Every red flag warning in 2009
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.