Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 31, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Sep 22, 2012, 2:56 PM MDT for 8 counties in Utah. It took effect at Sep 23, 2012, 10:00 AM MDT. It was in force for 10 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 22, 2012, 2:56 PM MDT (20:56 UTC)
- In effect from
- Sep 23, 2012, 10:00 AM MDT
- Expired
- Sep 23, 2012, 8:00 PM MDT
- In force
- 10 hr
- Issued by
- NWS Salt Lake City, UT
Counties Box Elder County, UT, Davis County, UT, Juab County, UT, Millard County, UT, Salt Lake County, UT, Sanpete County, UT, Tooele County, UT, Utah County, UT
The radar
The Salt Lake City radar (KMTX), 114 km from the middle of the area, began a volume at 21:00 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
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.9 hours before the alert went out and 75 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
- 4285 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
338 WWUS85 KSLC 222056 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 256 PM MDT SAT SEP 22 2012 UTZ495-222200- /O.CAN.KSLC.FW.A.0020.120923T1600Z-120924T0200Z/ COLOR COUNTRY WEST DESERT- 256 PM MDT SAT SEP 22 2012 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 495... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS CANCELLED THE FIRE WEATHER WATCH FOR FIRE WEATHER ZONE 495. ALTHOUGH SOUTHWEST WINDS GUSTING TO 35 MPH WILL DEVELOP SUNDAY AFTERNOON...RELATIVE HUMIDITIES WILL RISE ABOVE 15 PERCENT ACROSS MANY AREAS. THEREFORE...CRITICAL FIRE WEATHER CONDITIONS ARE NOT EXPECTED TO OCCUR. $$ UTZ478-492-231100- /O.UPG.KSLC.FW.A.0020.120923T1600Z-120924T0200Z/ /O.NEW.KSLC.FW.W.0031.120923T1600Z-120924T0200Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 256 PM MDT SAT SEP 22 2012 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 492... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 10 AM TO 8 PM MDT SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS AROUND 30 MPH. ACROSS FAR NORTHWEST UTAH...SOUTHWEST WINDS WITH A WIND SHIFT TO THE NORTHWEST SUNDAY EVENING. * RELATIVE HUMIDITY...AFTERNOON MINIMUMS DOWN TO 12 PERCENT. * IMPACTS...THE COMBINATION OF LOW HUMIDITY AND GUSTY WINDS WILL CREATE HAZARDOUS FIRE WEATHER CONDITIONS. ISOLATED DRY LIGHTNING IS ALSO POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
2 follow-up statements
196 WWUS85 KSLC 231030 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 430 AM MDT SUN SEP 23 2012 UTZ478-492-232100- /O.CON.KSLC.FW.W.0031.120923T1600Z-120924T0200Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 430 AM MDT SUN SEP 23 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 492... * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS AROUND 30 MPH. ACROSS FAR NORTHWEST UTAH...SOUTHWEST WINDS WITH A WIND SHIFT TO THE NORTHWEST THIS EVENING. * RELATIVE HUMIDITY...AFTERNOON MINIMUMS DOWN TO 12 PERCENT. * IMPACTS...THE COMBINATION OF LOW HUMIDITY AND GUSTY WINDS WILL CREATE HAZARDOUS FIRE WEATHER CONDITIONS. ISOLATED DRY LIGHTNING IS ALSO POSSIBLE. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
244 WWUS85 KSLC 232027 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 227 PM MDT SUN SEP 23 2012 UTZ478-492-240200- /O.CON.KSLC.FW.W.0031.000000T0000Z-120924T0200Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 227 PM MDT SUN SEP 23 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 492... * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS AROUND 30 MPH. ACROSS FAR NORTHWEST UTAH...SOUTHWEST WINDS WITH A WIND SHIFT TO THE NORTHWEST THIS EVENING. * RELATIVE HUMIDITY...AFTERNOON MINIMUMS DOWN TO 13 PERCENT. * IMPACTS...THE COMBINATION OF LOW HUMIDITY AND GUSTY WINDS WILL CREATE HAZARDOUS FIRE WEATHER CONDITIONS. ISOLATED DRY LIGHTNING IS ALSO POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
Nearby
Red Flag Warnings in Utah, 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.