Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 23, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Aug 2, 2012, 2:08 PM MDT for 9 counties in Utah. It took effect at Aug 3, 2012, 12:00 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 2, 2012, 2:08 PM MDT (20:08 UTC)
- In effect from
- Aug 3, 2012, 12:00 PM MDT
- Expired
- Aug 3, 2012, 9:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Salt Lake City, UT
Counties Cache County, UT, Duchesne 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), 97 km from the middle of the area, began a volume at 20:14 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, 8.1 hours before the alert went out and 44 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
- 2769 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
218 WWUS85 KSLC 022008 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 208 PM MDT THU AUG 2 2012 UTZ479-480-030515- /O.UPG.KSLC.FW.A.0014.120803T1800Z-120804T0300Z/ /O.NEW.KSLC.FW.W.0023.120803T1800Z-120804T0300Z/ WASATCH MOUNTAINS-UINTA MOUNTAINS- 208 PM MDT THU AUG 2 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 480 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 TO 9 PM MDT FRIDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET AND FIRE WEATHER ZONE 480 UINTA MOUNTAINS BELOW 8000 FEET. * WINDS...WEST NORTHWEST WINDS AT 15-20 MPH WITH GUSTS TO 35 MPH POSSIBLE. * RELATIVE HUMIDITY...MINIMUM OF 11-15%. * IMPACTS...GUSTY WINDS AND LOW RH WILL COMBINE FOR ELEVATED 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
4 follow-up statements
972 WWUS85 KSLC 030343 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 943 PM MDT THU AUG 2 2012 UTZ479-480-031700- /O.CON.KSLC.FW.W.0023.120803T1800Z-120804T0300Z/ WASATCH MOUNTAINS-UINTA MOUNTAINS- 943 PM MDT THU AUG 2 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 480 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET AND FIRE WEATHER ZONE 480 UINTA MOUNTAINS BELOW 8000 FEET. * WINDS...WEST NORTHWEST WINDS AT 15-20 MPH WITH GUSTS TO 35 MPH POSSIBLE. * RELATIVE HUMIDITY...MINIMUM OF 11-15%. * IMPACTS...GUSTY WINDS AND LOW RH WILL COMBINE FOR ELEVATED FIRE BEHAVIOR PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
362 WWUS85 KSLC 031435 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 835 AM MDT FRI AUG 3 2012 UTZ479-480-040000- /O.CON.KSLC.FW.W.0023.120803T1800Z-120804T0300Z/ WASATCH MOUNTAINS-UINTA MOUNTAINS- 835 AM MDT FRI AUG 3 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 480 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET AND FIRE WEATHER ZONE 480 UINTA MOUNTAINS BELOW 8000 FEET. * WINDS...WEST NORTHWEST WINDS AT 15-20 MPH WITH GUSTS TO 35 MPH POSSIBLE. * RELATIVE HUMIDITY...MINIMUM OF 11-15%. * IMPACTS...GUSTY WINDS AND LOW RH WILL COMBINE FOR ELEVATED 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
558 WWUS85 KSLC 032117 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 317 PM MDT FRI AUG 3 2012 UTZ479-480-040300- /O.CON.KSLC.FW.W.0023.000000T0000Z-120804T0300Z/ WASATCH MOUNTAINS-UINTA MOUNTAINS- 317 PM MDT FRI AUG 3 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 480 BELOW 8000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS BELOW 8000 FEET AND FIRE WEATHER ZONE 480 UINTA MOUNTAINS BELOW 8000 FEET. * WINDS...WEST NORTHWEST WINDS AT 15-20 MPH WITH GUSTS TO 35 MPH POSSIBLE. * RELATIVE HUMIDITY...MINIMUM OF 11-15%. * IMPACTS...GUSTY WINDS AND LOW RH WILL COMBINE FOR ELEVATED FIRE BEHAVIOR PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
667 WWUS85 KSLC 040247 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 847 PM MDT FRI AUG 3 2012 UTZ479-480-040400- /O.EXP.KSLC.FW.W.0023.000000T0000Z-120804T0300Z/ WASATCH MOUNTAINS-UINTA MOUNTAINS- 847 PM MDT FRI AUG 3 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 480 BELOW 8000 FEET... WINDS HAVE DECREASED THIS EVENING ACROSS THE WASATCH AND UINTA MOUNTAINS AND HUMIDITIES HAVE RISEN. HAZARDOUS FIRE WEATHER CONDITIONS HAVE DIMINISHED AS A RESULT...SO THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ 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 2, 2:54 AM MDT | Fire Weather Watch | SLC | Cache, Duchesne, Morgan, Rich, Salt Lake, Summit and 3 more | 11 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.