Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 30, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Sep 14, 2012, 2:26 PM MDT for 8 counties in Utah. It took effect at Sep 15, 2012, 12:00 PM MDT. It was in force for 32 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 14, 2012, 2:26 PM MDT (20:26 UTC)
- In effect from
- Sep 15, 2012, 12:00 PM MDT
- Expired
- Sep 16, 2012, 8:00 PM MDT
- In force
- 32 hr
- Issued by
- NWS Salt Lake City, UT
Counties Cache County, UT, Morgan County, UT, Rich County, UT, Salt Lake County, UT, Summit County, UT, Utah County, UT, Wasatch County, UT, Weber County, UT
The radar
The Salt Lake City radar (KMTX), 84 km from the middle of the area, began a volume at 20:26 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, 8.4 hours before the alert went out and 38 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
- 3278 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
247 WWUS85 KSLC 142026 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 226 PM MDT FRI SEP 14 2012 UTZ479-150430- /O.UPG.KSLC.FW.A.0019.120915T1800Z-120917T0200Z/ /O.NEW.KSLC.FW.W.0030.120915T1800Z-120917T0200Z/ WASATCH MOUNTAINS- 226 PM MDT FRI SEP 14 2012 ...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO 8 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED FLAG WARNING BELOW 8000 FEET FOR WIND AND LOW RELATIVE HUMIDITY... WHICH IS IN EFFECT FROM NOON SATURDAY TO 8 PM MDT SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS 10 TO 20 MPH WITH GUSTS NEAR 30 MPH WILL DEVELOP SATURDAY AFTERNOON. WINDS WILL DECREASE MID-EVENING SATURDAY...THEN INCREASE AGAIN TO 15 TO 25 MPH WITH GUSTS NEAR 30 MPH BY SUNDAY AFTERNOON. * RELATIVE HUMIDITY...BETWEEN 10 AND 15 PERCENT SATURDAY WITH POOR HUMIDITY RECOVERY SATURDAY NIGHT. MINIMUM HUMIDITIES NEAR 15 PERCENT BY SUNDAY AFTERNOON. * IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY...AND DRY FUELS WILL SUPPORT EXTREME FIRE BEHAVIOR. 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
5 follow-up statements
709 WWUS85 KSLC 151032 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 432 AM MDT SAT SEP 15 2012 UTZ479-152100- /O.CON.KSLC.FW.W.0030.120915T1800Z-120917T0200Z/ WASATCH MOUNTAINS- 432 AM MDT SAT SEP 15 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS 10 TO 20 MPH WITH GUSTS NEAR 30 MPH WILL DEVELOP THIS AFTERNOON. WINDS WILL DECREASE THIS EVENING...THEN INCREASE AGAIN TO 15 TO 25 MPH WITH GUSTS NEAR 30 MPH SUNDAY AFTERNOON. * RELATIVE HUMIDITY...BETWEEN 10 AND 15 PERCENT TODAY WITH POOR HUMIDITY RECOVERY OVERNIGHT. MINIMUM HUMIDITIES NEAR 15 PERCENT SUNDAY AFTERNOON. * IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY...AND DRY FUELS WILL SUPPORT EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
083 WWUS85 KSLC 152002 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 202 PM MDT SAT SEP 15 2012 UTZ479-161100- /O.CON.KSLC.FW.W.0030.000000T0000Z-120917T0200Z/ WASATCH MOUNTAINS- 202 PM MDT SAT SEP 15 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS 10 TO 20 MPH WITH GUSTS NEAR 30 MPH WILL CONTINUE THIS AFTERNOON. WINDS WILL DECREASE THIS EVENING... THEN INCREASE AGAIN TO 15 TO 25 MPH WITH GUSTS NEAR 30 MPH SUNDAY AFTERNOON. * RELATIVE HUMIDITY...BETWEEN 10 AND 15 PERCENT TODAY WITH POOR HUMIDITY RECOVERY OVERNIGHT. MINIMUM HUMIDITIES NEAR 15 PERCENT SUNDAY AFTERNOON. * IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY...AND DRY FUELS WILL SUPPORT EXTREME FIRE BEHAVIOR. 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
192 WWUS85 KSLC 161037 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 437 AM MDT SUN SEP 16 2012 UTZ479-162100- /O.CON.KSLC.FW.W.0030.000000T0000Z-120917T0200Z/ WASATCH MOUNTAINS- 437 AM MDT SUN SEP 16 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS 15 TO 25 MPH WITH GUSTS NEAR 30 MPH WILL CONTINUE THIS AFTERNOON THROUGH EARLY EVENING. WINDS WILL DECREASE LATER THIS EVENING. * RELATIVE HUMIDITY...MINIMUM HUMIDITIES NEAR OR SLIGHTLY BELOW 15 PERCENT THIS AFTERNOON. * IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY...AND DRY FUELS WILL SUPPORT EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
806 WWUS85 KSLC 162048 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 248 PM MDT SUN SEP 16 2012 UTZ479-170200- /O.CON.KSLC.FW.W.0030.000000T0000Z-120917T0200Z/ WASATCH MOUNTAINS- 248 PM MDT SUN SEP 16 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS 15 TO 25 MPH WITH GUSTS NEAR 30 MPH WILL CONTINUE THIS AFTERNOON THROUGH EARLY EVENING. WINDS WILL DECREASE LATER THIS EVENING. * RELATIVE HUMIDITY...MINIMUM HUMIDITIES NEAR OR SLIGHTLY BELOW 15 PERCENT THIS AFTERNOON. * IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY...AND DRY FUELS WILL SUPPORT EXTREME FIRE BEHAVIOR. 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
512 WWUS85 KSLC 170204 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 804 PM MDT SUN SEP 16 2012 UTZ479-170315- /O.EXP.KSLC.FW.W.0030.000000T0000Z-120917T0200Z/ WASATCH MOUNTAINS- 804 PM MDT SUN SEP 16 2012 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... DECREASING WINDS WITH GRADUAL INCREASES IN HUMIDITY VALUES THIS EVENING HAS BROUGHT AN END TO HAZARDOUS FIRE WEATHER CONDITIONS FOR THE WASATCH MOUNTAINS BELOW 8000 FEET. $$ 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.