Alert archive / California / Red Flag Warnings in 2012
Red Flag Warning 4, NWS Reno, NV
NWS Reno, NV issued this red flag warning at May 13, 2012, 3:01 PM PDT for Lassen County, Modoc County, California; Washoe County, Nevada. It took effect at May 14, 2012, 12:00 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
- May 13, 2012, 3:01 PM PDT (22:01 UTC)
- In effect from
- May 14, 2012, 12:00 PM PDT
- Expired
- May 14, 2012, 7:00 PM PDT
- In force
- 7 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 22:01 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, 10.0 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
- 4263 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
455 WWUS85 KREV 132201 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 301 PM PDT SUN MAY 13 2012 ...DRY THUNDERSTORMS AND GUSTY WINDS MONDAY... .AN AREA OF LOW PRESSURE WILL MOVE ACROSS THE REGION TONIGHT AND MONDAY BRINGING INCREASED CHANCES FOR THUNDERSTORMS TO NORTHEASTERN CA AND NORTHWEST NEVADA. LIMITED MOISTURE AND FAST MOVING STORMS WILL RESULT IN AN INCREASED RISK OF DRY LIGHTNING. WINDS WILL INCREASE MONDAY AFTERNOON WITH GUSTS 30 TO 35 MPH. CAZ270-278-NVZ458-141500- /O.UPG.KREV.FW.A.0002.120514T0700Z-120515T0400Z/ /O.NEW.KREV.FW.W.0004.120514T1500Z-120515T0200Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 301 PM PDT SUN MAY 13 2012 ...RED FLAG WARNING IN EFFECT FROM 8 AM TO 7 PM PDT MONDAY FOR DRY THUNDERSTORMS AND GUSTY WINDS FOR EASTERN LASSEN COUNTY... SURPRISE VALLEY...AND NORTHERN WASHOE COUNTY... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A RED FLAG WARNING FOR DRY THUNDERSTORMS AND GUSTY WINDS...WHICH IS IN EFFECT FROM 8 AM TO 7 PM PDT MONDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED THUNDERSTORMS MONDAY. MANY THUNDERSTORMS WILL PRODUCE LIMITED RAINFALL DURING THE LATE MORNING AND AFTERNOON. * WINDS...GUSTS UP TO 45 MPH EXPECTED NEAR ANY THUNDERSTORMS. GUSTS INCREASING ACROSS THE AREA MONDAY AFTERNOON TO BETWEEN 25 TO 35 MPH WITH RIDGE GUSTS UP TO 45 MPH. * IMPACTS...LIGHTNING MAY CREATE NEW FIRE STARTS AND COMBINE WITH GUSTY WINDS TO PRODUCE RAPID FIRE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
3 follow-up statements
613 WWUS85 KREV 141115 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 415 AM PDT MON MAY 14 2012 ...DRY THUNDERSTORMS AND GUSTY WINDS TODAY... .A LOW-PRESSURE SYSTEM WILL CROSS THE SIERRA TODAY CREATING SCATTERED THUNDERSTORMS ACROSS NORTHEASTERN CA AND NORTHWEST NEVADA. LIMITED MOISTURE AND FAST MOVING STORMS WILL RESULT IN AN INCREASED RISK OF DRY LIGHTNING. WINDS WILL INCREASE THIS AFTERNOON WITH GUSTS 30 TO 35 MPH. CAZ270-278-NVZ458-142300- /O.EXT.KREV.FW.W.0004.120514T1900Z-120515T0200Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 415 AM PDT MON MAY 14 2012 ...RED FLAG WARNING NOW IN EFFECT FROM NOON TODAY TO 7 PM PDT THIS EVENING FOR DRY THUNDERSTORMS AND GUSTY WINDS FOR EASTERN LASSEN COUNTY...SURPRISE VALLEY...AND NORTHERN WASHOE COUNTY... * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED THUNDERSTORMS THIS AFTERNOON. MANY THUNDERSTORMS WILL PRODUCE LIMITED RAINFALL. * WINDS...GUSTS UP TO 45 MPH EXPECTED NEAR ANY THUNDERSTORMS. GUSTS INCREASING ACROSS THE AREA MONDAY AFTERNOON TO BETWEEN 25 TO 35 MPH WITH RIDGE GUSTS UP TO 45 MPH. * IMPACTS...LIGHTNING MAY CREATE NEW FIRE STARTS AND COMBINE WITH GUSTY WINDS TO PRODUCE RAPID FIRE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
616 WWUS85 KREV 142203 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 303 PM PDT MON MAY 14 2012 ...DRY THUNDERSTORMS AND GUSTY WINDS INTO EARLY THIS EVENING... .A LOW-PRESSURE SYSTEM WILL CROSS THE SIERRA THIS EVENING AND OVERNIGHT CREATING SCATTERED THUNDERSTORMS ACROSS NORTHEASTERN CA AND NORTHWEST NEVADA. LIMITED MOISTURE AND FAST MOVING STORMS WILL RESULT IN AN INCREASED RISK OF DRY LIGHTNING. EAST TO SOUTHEAST WINDS WILL OCCASIONALLY GUST UP TO 35 MPH OUTSIDE OF THE THUNDERSTORMS WHILE GUSTY OUTFLOW WINDS COULD REACH 45 MPH NEAR THE THUNDERSTORMS. CAZ270-278-NVZ458-150200- /O.CON.KREV.FW.W.0004.000000T0000Z-120515T0200Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 303 PM PDT MON MAY 14 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING FOR DRY THUNDERSTORMS AND GUSTY WINDS FOR EASTERN LASSEN COUNTY... SURPRISE VALLEY...AND NORTHERN WASHOE COUNTY... * AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA... FIRE ZONE 278 EASTERN LASSEN COUNTY AND FIRE ZONE 458 NORTHERN WASHOE COUNTY. * THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED THUNDERSTORMS EARLY THIS EVENING. MANY THUNDERSTORMS WILL PRODUCE LIMITED RAINFALL BEFORE TRANSITIONING TO A MIX OF WET AND DRY STORMS LATER THIS EVENING. * WINDS...GUSTS UP TO 45 MPH EXPECTED NEAR ANY THUNDERSTORMS. EAST TO SOUTHEAST WIND GUSTS INCREASING OUTSIDE OF THE THUNDERSTORMS EARLY THIS EVENING UP TO 35 MPH WITH RIDGE GUSTS UP TO 45 MPH. * IMPACTS...LIGHTNING MAY CREATE NEW FIRE STARTS AND COMBINE WITH GUSTY WINDS TO PRODUCE RAPID FIRE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR. CONTINUE TO CHECK WEATHER.GOV/RENO FOR UPDATES. && $$ HTTP://WEATHER.GOV/RENO
399 WWUS85 KREV 150140 RFWREV URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 640 PM PDT MON MAY 14 2012 CAZ270-278-NVZ458-150245- /O.EXP.KREV.FW.W.0004.000000T0000Z-120515T0200Z/ SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY- NORTHERN WASHOE COUNTY- 640 PM PDT MON MAY 14 2012 ...RED FLAG WARNING WILL EXPIRE AT 7 PM PDT THIS EVENING FOR DRY THUNDERSTORMS AND GUSTY WINDS FOR EASTERN LASSEN COUNTY... SURPRISE VALLEY...AND NORTHERN WASHOE COUNTY... THUNDERSTORMS HAVE REMAINED OVER THE NORTHERN SIERRA AND NORTHERN SACRAMENTO VALLEY TODAY. A FEW THUNDERSTORMS ARE POSSIBLE THIS EVENING AND TONIGHT...HOWEVER SURFACE HUMIDITY HAS INCREASED WHICH WILL BRING A HIGHER PROBABILITY OF RAINFALL REACHING THE GROUND. $$ HTTP://WEATHER.GOV/RENO
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 3:03 PM PDT | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 24 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; radar from the NEXRAD Level II archive.