Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 25, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Aug 15, 2012, 2:30 PM MDT for 8 counties in Utah. It took effect at Aug 16, 2012, 1:00 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
- Aug 15, 2012, 2:30 PM MDT (20:30 UTC)
- In effect from
- Aug 16, 2012, 1:00 PM MDT
- Expired
- Aug 17, 2012, 9:00 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 nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.5 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
- 3570 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
164
WWUS85 KSLC 152030
RFWSLC
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
230 PM MDT WED AUG 15 2012
UTZ479-161100-
/O.NEW.KSLC.FW.W.0025.120816T1900Z-120817T0200Z/
WASATCH MOUNTAINS-
230 PM MDT WED AUG 15 2012
...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM MDT THURSDAY 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 1 PM TO 8 PM MDT THURSDAY.
* AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW
8000 FEET.
* WINDS...WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 30 MPH WILL
DEVELOP LATE THURSDAY MORNING...THEN CONTINUE INTO EARLY
THURSDAY EVENING.
* RELATIVE HUMIDITY...HUMIDITIES WILL REACH 15 PERCENT EARLY
THURSDAY AFTERNOON...THEN REMAIN NEAR OR SLIGHTLY BELOW THAT
VALUE INTO THURSDAY EVENING.
* IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE
TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THURSDAY AFTERNOON
THROUGH EARLY THURSDAY EVENING.
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.
&&
$$
FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)7 follow-up statements
582 WWUS85 KSLC 160855 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 255 AM MDT THU AUG 16 2012 UTZ479-162130- /O.CON.KSLC.FW.W.0025.120816T1900Z-120817T0200Z/ WASATCH MOUNTAINS- 255 AM MDT THU AUG 16 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 30 MPH WILL DEVELOP LATE THIS MORNING...THEN CONTINUE INTO EARLY EVENING. * RELATIVE HUMIDITY...HUMIDITIES WILL REACH 15 PERCENT EARLY THIS AFTERNOON...THEN REMAIN NEAR OR SLIGHTLY BELOW THAT VALUE INTO THIS EVENING. * IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THIS AFTERNOON THROUGH EARLY THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
650 WWUS85 KSLC 161947 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 147 PM MDT THU AUG 16 2012 UTZ479-170200- /O.CON.KSLC.FW.W.0025.000000T0000Z-120817T0200Z/ WASATCH MOUNTAINS- 147 PM MDT THU AUG 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...NORTHWEST TO WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 25 MPH WILL CONTINUE THROUGH THIS AFTERNOON AND CONTINUE INTO EARLY EVENING. * RELATIVE HUMIDITY...HUMIDITIES WILL REMAIN NEAR OR SLIGHTLY BELOW 15 PERCENT INTO THIS EVENING. * IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THIS AFTERNOON THROUGH EARLY THIS EVENING. 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
751 WWUS85 KSLC 162058 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 258 PM MDT THU AUG 16 2012 UTZ479-170600- /O.EXT.KSLC.FW.W.0025.000000T0000Z-120818T0300Z/ WASATCH MOUNTAINS- 258 PM MDT THU AUG 16 2012 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...NORTHWEST TO WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 25 MPH WILL CONTINUE INTO EARLY EVENING. WINDS WILL DECREASE OVERNIGHT AND THEN REDEVELOP AGAIN FRIDAY AFTERNOON INTO FRIDAY EVENING. * RELATIVE HUMIDITY...HUMIDITIES WILL REMAIN NEAR OR SLIGHTLY BELOW 15 PERCENT INTO THIS EVENING. HUMIDITIES WILL RECOVER ABOVE 15 PERCENT OVERNIGHT BEFORE DECREASING BELOW 15 PERCENT AGAIN FRIDAY AFTERNOON INTO FRIDAY EVENING. * IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THROUGH THIS EVENING AND AGAIN FRIDAY AFTERNOON AND EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
018 WWUS85 KSLC 170429 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1029 PM MDT THU AUG 16 2012 UTZ479-171200- /O.CON.KSLC.FW.W.0025.000000T0000Z-120818T0300Z/ WASATCH MOUNTAINS- 1029 PM MDT THU AUG 16 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY 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...NORTHWEST TO WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 25 MPH WILL REDEVELOP FRIDAY AFTERNOON INTO FRIDAY EVENING. * RELATIVE HUMIDITY...HUMIDITIES WILL RECOVER ABOVE 15 PERCENT TONIGHT BEFORE DECREASING BELOW 15 PERCENT AGAIN FRIDAY AFTERNOON INTO FRIDAY EVENING. * IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THROUGH THIS EVENING AND AGAIN FRIDAY AFTERNOON AND EVENING. 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
408 WWUS85 KSLC 171101 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 501 AM MDT FRI AUG 17 2012 UTZ479-172200- /O.CON.KSLC.FW.W.0025.000000T0000Z-120818T0300Z/ WASATCH MOUNTAINS- 501 AM MDT FRI AUG 17 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET. * WINDS...NORTHWEST TO WEST WINDS OF 10 TO 20 MPH WITH GUSTS NEAR 25 MPH WILL DEVELOP EARLY THIS AFTERNOON AND LAST THROUGH THE EVENING. * RELATIVE HUMIDITY...HUMIDITIES WILL DECREASE BELOW 15 PERCENT THIS AFTERNOON THROUGH THIS EVENING. * IMPACTS...THE GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THIS AFTERNOON AND THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
705 WWUS85 KSLC 171954 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 154 PM MDT FRI AUG 17 2012 UTZ479-180300- /O.CON.KSLC.FW.W.0025.000000T0000Z-120818T0300Z/ WASATCH MOUNTAINS- 154 PM MDT FRI AUG 17 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 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...NORTHWEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 TO 15 PERCENT. * IMPACTS...GUSTY WEST WINDS AND LOW HUMIDITIES WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS THROUGH THIS EVENING. 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. && $$ UTZ478-492-495-180600- /O.NEW.KSLC.FW.A.0015.120819T1800Z-120820T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- COLOR COUNTRY WEST DESERT- 154 PM MDT FRI AUG 17 2012 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 478...492 AND 495... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A FIRE WEATHER WATCH FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS... WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT AND FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT. * THUNDERSTORMS...WIDELY SCATTERED DRY THUNDERSTORMS ARE POSSIBLE SUNDAY AFTERNOON AND EVENING ACROSS WESTERN UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS SUNDAY AFTERNOON AND EVENING. * IMPACTS...DRY LIGHTNING WILL BRING THE POTENTIAL FOR NUMEROUS NEW FIRE STARTS...AND GUSTY MICROBURST WINDS MAY RESULT IN ERRATIC FIRE BEHAVIOR...BOTH WITH NEW STARTS AND EXISTING FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT THERE IS A POTENTIAL FOR CRITICAL FIRE WEATHER CONDITIONS. CONTINUE TO MONITOR FOR THE LATEST FORECASTS AND FOR POSSIBLE RED FLAG WARNINGS. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
144 WWUS85 KSLC 180253 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 853 PM MDT FRI AUG 17 2012 UTZ479-180400- /O.EXP.KSLC.FW.W.0025.000000T0000Z-120818T0300Z/ WASATCH MOUNTAINS- 853 PM MDT FRI AUG 17 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 8000 FEET... WINDS HAVE DIMINISHED ACROSS ZONE 479 AND HUMIDITY HAS INCREASED THIS EVENING. AS SUCH THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. $$ UTZ478-492-495-181200- /O.CON.KSLC.FW.A.0015.120819T1800Z-120820T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- COLOR COUNTRY WEST DESERT- 853 PM MDT FRI AUG 17 2012 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 478...492 AND 495... * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT AND FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT. * THUNDERSTORMS...WIDELY SCATTERED DRY THUNDERSTORMS ARE POSSIBLE SUNDAY AFTERNOON AND EVENING ACROSS WESTERN UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS SUNDAY AFTERNOON AND EVENING. * IMPACTS...DRY LIGHTNING WILL BRING THE POTENTIAL FOR NUMEROUS NEW FIRE STARTS...AND GUSTY MICROBURST WINDS MAY RESULT IN ERRATIC FIRE BEHAVIOR...BOTH WITH NEW STARTS AND EXISTING FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT THERE IS A POTENTIAL FOR CRITICAL FIRE WEATHER CONDITIONS. CONTINUE TO MONITOR FOR THE LATEST FORECASTS AND FOR POSSIBLE RED FLAG WARNINGS. && $$ 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.