Alert archive / Utah / Flash Flood Warnings in 2012
Flash Flood Warning 4, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 12, 2012, 5:18 PM MDT for Iron County, Washington County, Utah. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2012, 5:18 PM MDT (23:18 UTC)
- Expired
- Jul 12, 2012, 8:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Iron County, UT, Washington County, UT
The radar
The Cedar City radar (KICX), 57 km from the middle of the area, began a volume at 23:19 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
Las Vegas, NV (KVEF), launched 12:00Z, 11.3 hours before the alert went out and 228 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
- 3775 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
378 WGUS55 KSLC 122318 FFWSLC UTC021-053-130215- /O.NEW.KSLC.FF.W.0004.120712T2318Z-120713T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 518 PM MDT THU JUL 12 2012 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL IRON COUNTY IN UTAH NORTH CENTRAL WASHINGTON COUNTY IN UTAH * UNTIL 815 PM MDT * AT 515 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEWCASTLE. FLOODING MAY IMPACT ROUTE 56 ESPECIALLY JUST EAST OF NEWCASTLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3756 11351 3766 11365 3774 11347 3766 11341 $$ ROGOWSKI
2 follow-up statements
940 WGUS75 KSLC 130016 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 616 PM MDT THU JUL 12 2012 UTC021-053-130215- /O.CON.KSLC.FF.W.0004.000000T0000Z-120713T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WASHINGTON UT-IRON UT- 616 PM MDT THU JUL 12 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR FAR SOUTH CENTRAL IRON AND FAR NORTH CENTRAL WASHINGTON COUNTIES... AT 611 PM MDT...HEAVY THUNDERSTORMS THAT WERE LOCATED NEAR NEWCASTLE HAVE DIMINISHED. HOWEVER...THE THREAT FROM RUNOFF REMAINS ESPECIALLY ALONG ROUTE 56 EAST OF NEWCASTLE THROUGH MID EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3756 11351 3766 11365 3774 11347 3766 11341 $$ ROGOWSKI
991 WGUS75 KSLC 130208 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 808 PM MDT THU JUL 12 2012 UTC021-053-130217- /O.EXP.KSLC.FF.W.0004.000000T0000Z-120713T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WASHINGTON UT-IRON UT- 808 PM MDT THU JUL 12 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 PM MDT FOR SOUTH CENTRAL IRON AND NORTH CENTRAL WASHINGTON COUNTIES... RUNOFF FROM EARLIER PRECIPITATION NEAR NEWCASTLE ON ROUTE 56 HAS DIMINISHED GREATLY. THEREFORE... THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION. LAT...LON 3756 11351 3766 11365 3774 11347 3766 11341 $$ ROGOWSKI
Nearby
Flash Flood Warnings in Utah, 2012Every flash flood 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.