Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 34, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Oct 5, 2012, 3:15 AM MDT for Carbon County, Emery County, Utah. It took effect at Oct 5, 2012, 12:00 PM MDT. It was in force for 8 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
- Oct 5, 2012, 3:15 AM MDT (09:15 UTC)
- In effect from
- Oct 5, 2012, 12:00 PM MDT
- Expired
- Oct 5, 2012, 8:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Salt Lake City, UT
Counties Carbon County, UT, Emery County, UT
The radar
The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 09:14 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
Grand Junction, CO (KGJT), launched 00:00Z, 9.3 hours before the alert went out and 186 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
- 0 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
778 WWUS85 KSLC 050915 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 315 AM MDT FRI OCT 5 2012 UTZ489-051715- /O.NEW.KSLC.FW.W.0034.121005T1800Z-121006T0200Z/ SAN RAFAEL SWELL- 315 AM MDT FRI OCT 5 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 489... THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 489 SAN RAFAEL SWELL. * WINDS...NORTHWEST AT 15-20 MPH WITH GUSTS OVER 30 MPH. * RELATIVE HUMIDITY...LOWERING TO 10-15 PERCENT. * IMPACTS...STRONG WINDS AND LOW RH WILL COMBINE TO POTENTIALLY CREATE 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
2 follow-up statements
957 WWUS85 KSLC 051654 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1054 AM MDT FRI OCT 5 2012 UTZ489-060200- /O.CON.KSLC.FW.W.0034.121005T1800Z-121006T0200Z/ SAN RAFAEL SWELL- 1054 AM MDT FRI OCT 5 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 489... * AFFECTED AREA...FIRE WEATHER ZONE 489 SAN RAFAEL SWELL. * WINDS...NORTHWEST AT 15 TO 20 MPH WITH GUSTS OVER 30 MPH. THE STRONGEST WINDS WILL BE ALONG THE ROUTE 10 CORRIDOR IN WESTERN CARBON AND EMERY COUNTIES. * RELATIVE HUMIDITY...AROUND 10 TO 15 PERCENT. * IMPACTS...STRONG WINDS AND LOW HUMIDITY WILL COMBINE TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
382 WWUS85 KSLC 060205 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 805 PM MDT FRI OCT 5 2012 UTZ489-060315- /O.EXP.KSLC.FW.W.0034.000000T0000Z-121006T0200Z/ SAN RAFAEL SWELL- 805 PM MDT FRI OCT 5 2012 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 489... HUMIDITIES HAVE INCREASED EARLY THIS EVENING...AND WINDS WILL CONTINUE TO DIMINISH AS THE EVENING WEARS ON ACROSS THE SAN RAFAEL SWELL REGION...THUS 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 |
|---|---|---|---|---|
| Oct 5, 3:13 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.