Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at May 5, 2012, 3:22 AM MDT for 5 counties in Utah. It took effect at May 5, 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
- May 5, 2012, 3:22 AM MDT (09:22 UTC)
- In effect from
- May 5, 2012, 12:00 PM MDT
- Expired
- May 5, 2012, 9:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Salt Lake City, UT
Counties Garfield County, UT, Kane County, UT, San Juan County, UT, Washington County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 120 km from the middle of the area, began a volume at 09:28 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
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 9.4 hours before the alert went out and 273 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
- 3257 m above ground
- 0-6 km bulk shear
- 29 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.
588 WWUS85 KSLC 050922 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 322 AM MDT SAT MAY 5 2012 UTZ497-498-052000- /O.NEW.KSLC.FW.W.0002.120505T1800Z-120506T0300Z/ MOJAVE DESERT-GRAND STAIRCASE- 322 AM MDT SAT MAY 5 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 497 AND 498 BELOW 4000 FEET... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED FLAG WARNING BELOW 4000 FEET FOR WIND AND LOW RELATIVE HUMIDITY... WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 497 MOJAVE DESERT BELOW 4000 FEET AND FIRE WEATHER ZONE 498 GRAND STAIRCASE BELOW 4000 FEET. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 9 PERCENT. * IMPACTS...THE COMBINATION OF DRY FUELS...LOW RELATIVE HUMIDITY VALUES...AND GUSTY WESTERLY WINDS WILL RESULT IN 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
3 follow-up statements
662 WWUS85 KSLC 051449 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 849 AM MDT SAT MAY 5 2012 UTZ497-498-060300- /O.CON.KSLC.FW.W.0002.120505T1800Z-120506T0300Z/ MOJAVE DESERT-GRAND STAIRCASE- 849 AM MDT SAT MAY 5 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 497 AND 498 BELOW 4000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 497 MOJAVE DESERT BELOW 4000 FEET AND FIRE WEATHER ZONE 498 GRAND STAIRCASE BELOW 4000 FEET. * WINDS...NORTH WINDS AT 15-20 MPH WITH GUSTS TO 40 MPH IN ZONE 497 AND WEST 15 TO 20 MPH WITH GUSTS UP TO 32 MPH IN ZONE 498. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...THE COMBINATION OF DRY FUELS...LOW RELATIVE HUMIDITY VALUES...AND GUSTY WESTERLY WINDS WILL RESULT IN HAZARDOUS FIRE WEATHER CONDITIONS THROUGH THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND CRITICALLY DRY FUELS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
837 WWUS85 KSLC 052022 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 222 PM MDT SAT MAY 5 2012 UTZ498-052130- /O.CAN.KSLC.FW.W.0002.000000T0000Z-120506T0300Z/ GRAND STAIRCASE- 222 PM MDT SAT MAY 5 2012 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS CANCELLED THE RED FLAG WARNING. WINDS HAVE STEADILY DECREASED ACROSS THE AREA THIS AFTERNOON AND ARE NO LONGER EXPECTED TO REACH CRITERIA. $$ UTZ497-060300- /O.CON.KSLC.FW.W.0002.000000T0000Z-120506T0300Z/ MOJAVE DESERT- 222 PM MDT SAT MAY 5 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 497 BELOW 4000 FEET... * AFFECTED AREA...FIRE WEATHER ZONE 497 MOJAVE DESERT BELOW 4000 FEET...ESPECIALLY IN AND AT THE MOUTHS OF NORTH-SOUTH ORIENTED CANYONS. * WINDS...NORTHEAST 12 TO 18 MPH WITH GUSTS OVER 30 MPH. * RELATIVE HUMIDITY...13-15 PERCENT. * IMPACTS...THE COMBINATION OF DRY FUELS...LOW RELATIVE HUMIDITY VALUES...AND GUSTY NORTHERLY WINDS WILL RESULT IN HAZARDOUS FIRE WEATHER CONDITIONS THROUGH THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND CRITICALLY DRY FUELS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
701 WWUS85 KSLC 060305 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 905 PM MDT SAT MAY 5 2012 UTZ497-060415- /O.EXP.KSLC.FW.W.0002.000000T0000Z-120506T0300Z/ MOJAVE DESERT- 905 PM MDT SAT MAY 5 2012 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 497... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ALLOWED THE RED FLAG WARNING TO EXPIRE. WINDS HAVE DECREASED OVER MUCH OF THE AREA AND ARE EXPECTED TO GENERALLY REMAIN BELOW CRITICAL THRESHOLDS OVERNIGHT. $$ 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 |
|---|---|---|---|---|
| May 4, 10:27 PM MDT | High Wind Warning | SLC | 4 hr | |
| May 5, 2:45 PM MDT | Hard Freeze Warning | SLC | 18 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.