Alert archive / Utah / Red Flag Warnings in 2012
Red Flag Warning 26, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Aug 18, 2012, 2:10 PM MDT for 11 counties in Utah. It took effect at Aug 19, 2012, 12:00 PM MDT. It was in force for 12 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 18, 2012, 2:10 PM MDT (20:10 UTC)
- In effect from
- Aug 19, 2012, 12:00 PM MDT
- Expired
- Aug 20, 2012, 12:00 AM MDT
- In force
- 12 hr
- Issued by
- NWS Salt Lake City, UT
Counties Beaver County, UT, Box Elder County, UT, Davis County, UT, Iron County, UT, Juab County, UT, Millard County, UT, Salt Lake County, UT, Sanpete County, UT, Tooele County, UT, Utah County, UT, Washington County, UT
The radar
The Salt Lake City radar (KMTX), 188 km from the middle of the area, began a volume at 20:16 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 19, 6:00 PM MDT | FLASH FLOOD | Zion Np, UT | SIGNIFICANT FLASH FLOODING IN KEYHOLE AND PINE CREEK CANYONS. |
| Aug 19, 6:20 PM MDT | FLASH FLOOD | Zion Np, UT | SIGNIFICANT FLASH FLOODING ALONG NORTH CREEK INCLUDING THE SUBWAY. FLASH FLOODING ALSO REPORTED IN SPRY CANYON AND ALONG THE NORTH FORK OF THE VIRGIN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.2 hours before the alert went out and 149 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
- 3391 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
801 WWUS85 KSLC 182010 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 210 PM MDT SAT AUG 18 2012 UTZ478-492-495-190600- /O.UPG.KSLC.FW.A.0015.120819T1800Z-120820T0600Z/ /O.NEW.KSLC.FW.W.0026.120819T1800Z-120820T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- COLOR COUNTRY WEST DESERT- 210 PM MDT SAT AUG 18 2012 ...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO MIDNIGHT MDT SUNDAY NIGHT 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 RED FLAG WARNING FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS... WHICH IS IN EFFECT FROM NOON SUNDAY TO MIDNIGHT MDT SUNDAY NIGHT. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * 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 EXPECTED SUNDAY AFTERNOON AND EVENING ACROSS WESTERN UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS UP 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 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. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
2 follow-up statements
899 WWUS85 KSLC 190833 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 233 AM MDT SUN AUG 19 2012 UTZ478-492-495-192200- /O.CON.KSLC.FW.W.0026.120819T1800Z-120820T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- COLOR COUNTRY WEST DESERT- 233 AM MDT SUN AUG 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 478...492 AND 495... * AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT AND FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT. * THUNDERSTORMS...WIDELY SCATTERED DRY THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING ACROSS WESTERN UTAH. * OUTFLOW WINDS...ERRATIC WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THUNDERSTORMS THIS AFTERNOON AND EVENING. * IMPACTS...DRY LIGHTNING WILL BRING THE POTENTIAL FOR NUMEROUS NEW FIRE STARTS...AND GUSTY MICROBURST WINDS MAY RESULT IN ERRATIC FIRE BEHAVIOR...BOTH WITH NEW STARTS AND EXISTING FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
180 WWUS85 KSLC 191957 RFWSLC URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SALT LAKE CITY UT 157 PM MDT SUN AUG 19 2012 UTZ478-492-495-200600- /O.CON.KSLC.FW.W.0026.000000T0000Z-120820T0600Z/ SALT LAKE DESERT-CENTRAL UTAH WEST DESERT- COLOR COUNTRY WEST DESERT- 157 PM MDT SUN AUG 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT 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 EXPECTED TO CONTINUE TO DEVELOP THIS AFTERNOON AND EVENING ACROSS THE VALLEYS OF WESTERN 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 17, 6:34 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Aug 17, 7:15 PM MDT | Flash Flood Warning | SLC | Washington | 3 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.