Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 27, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Aug 20, 2012, 3:06 PM MDT for 8 counties in Utah. It took effect at Aug 21, 2012, 3:00 PM MDT. It was in force for 9 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 20, 2012, 3:06 PM MDT (21:06 UTC)
- In effect from
- Aug 21, 2012, 3:00 PM MDT
- Expired
- Aug 22, 2012, 12:00 AM MDT
- In force
- 9 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 21:05 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, 9.1 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
- 155 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 2032 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
578 WWUS85 KSLC 202106 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 306 PM MDT MON AUG 20 2012 UTZ478-492-211100- /O.NEW.KSLC.FW.W.0027.120821T2100Z-120822T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 306 PM MDT MON AUG 20 2012 ...RED FLAG WARNING IN EFFECT FROM 3 PM TUESDAY TO MIDNIGHT MDT TUESDAY NIGHT FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 478 AND 492... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED FLAG WARNING FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS... WHICH IS IN EFFECT FROM 3 PM TUESDAY TO MIDNIGHT MDT TUESDAY NIGHT. * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT. * THUNDERSTORMS...SCATTERED DRY THUNDERSTORMS WILL DEVELOP TOMORROW AFTERNOON ACROSS WEST CENTRAL AND NORTHWEST UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS TOMORROW 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 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
2 follow-up statements
735 WWUS85 KSLC 210754 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 154 AM MDT TUE AUG 21 2012 UTZ478-492-212200- /O.CON.KSLC.FW.W.0027.120821T2100Z-120822T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 154 AM MDT TUE AUG 21 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT MDT TONIGHT FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 478 AND 492... * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT. * THUNDERSTORMS...SCATTERED DRY THUNDERSTORMS WILL DEVELOP THIS AFTERNOON ACROSS WEST CENTRAL AND NORTHWEST UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS THIS AFTERNOON AND EVENING. * IMPACTS...DRY LIGHTNING WILL BRING THE POTENTIAL FOR NUMEROUS NEW FIRE STARTS...AND GUSTY MICROBURST WINDS MAY RESULT IN ERRATIC FIRE BEHAVIOR...BOTH WITH NEW STARTS AND EXISTING FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
838 WWUS85 KSLC 212057 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 257 PM MDT TUE AUG 21 2012 UTZ478-492-220600- /O.CON.KSLC.FW.W.0027.120821T2100Z-120822T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- 257 PM MDT TUE AUG 21 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS 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. * THUNDERSTORMS...SCATTERED DRY THUNDERSTORMS WILL CONTINUE THOUGH THIS EVENING ACROSS WEST CENTRAL AND NORTHWEST UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS THIS 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 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)
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 4:54 AM MDT | Flash Flood Watch | SLC | 15 hr | |
| Aug 20, 5:13 PM MDT | Flash Flood Warning | SLC | Kane | 7 hr |
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.