Alert archive / Utah / Flash Flood Warnings in 2005
Flash Flood Warning 7, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 20, 2005, 9:21 PM MDT for 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 20, 2005, 9:21 PM MDT (03:21 UTC)
- Expired
- Jul 21, 2005, 12:00 AM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Counties, with a storm outline in the text
County Washington County, UT
The radar
The Cedar City radar (KICX), 45 km from the middle of the area, began a volume at 03:24 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, 3.4 hours before the alert went out and 251 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
- 60 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 2496 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KSLC 210324 FFWSLC UTC053-210600- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 921 PM MDT WED JUL 20 2005 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN WASHINGTON COUNTY IN UTAH * UNTIL 1200 AM MDT * AT 920 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL ACROSS SOUTHERN WASHINGTON COUNTY...INCLUDING THE SOUTHERN HALF OF ZIONS NATIONAL PARK. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ZION NP... VIRGIN AND SPRINGDALE. DOPPLER RADAR ESTIMATES OF 1 TO 1.5 INCHES OF RAIN HAVE FALLEN FROM THUNDERSTORMS ACROSS THE WARNED AREA. THIS EXCESSIVE RAINFALL WILL LIKELY RESULT IN FLASH FLOODING...PARTICULARLY ALONG WASHES AND NARROW SLOT CANYONS IN AND NEAR ZIONS NATIONAL PARK. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 3738 11325 3701 11318 3702 11290 3737 11290 $$ SEAMAN
2 follow-up statements
000 WGUS75 KSLC 210415 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1015 PM MDT WED JUL 20 2005 UTC053-210600- WASHINGTON UT- 1015 PM MDT WED JUL 20 2005 ...A FLASH FLOOD WARNING CONTINUES UNTIL MIDNIGHT MDT FOR SOUTHEASTERN WASHINGTON COUNTY... RUNOFF FROM EARLIER RAINFALL IS LIKELY RESULTING IN FLASH FLOODING AT THIS TIME ALONG WASHES AND NARROW CANYONS ACROSS SOUTHERN PORTIONS OF ZIONS NATIONAL PARK IN ADDITION TO THE VERMILION CLIFFS. AT 1004 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THUNDERSTORMS ACROSS THE WARNED AREA CONTINUED TO DIMINISH. HOWEVER RADAR ESTIMATED RAINFALL TOTALS OF 1 TO 1.5 INCHES FELL ACROSS THE WARNED AREA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ZION NP...SPRINGDALE AND VIRGIN. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 3738 11325 3701 11318 3702 11290 3737 11290 $$ SEAMAN
000 WGUS75 KSLC 210558 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1156 PM MDT WED JUL 20 2005 UTC053-210606- WASHINGTON UT- 1156 PM MDT WED JUL 20 2005 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN WASHINGTON COUNTY WILL BE ALLOWED TO EXPIRE AT MIDNIGHT... THUNDERSTORMS WHICH EARLIER IN THE EVENING DROPPED 1 TO 1.5 INCHES OF RAINFALL HAVE DIMINISHED...AND RUNOFF ASSOCIATED WITH THIS EXCESSIVE RAINFALL HAS LIKELY RECEDED. AS A RESULT THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR SOUTHEASTERN WASHINGTON COUNTY WILL BE ALLOWED TO EXPIRE. LAT...LON 3738 11325 3701 11318 3702 11290 3737 11290 $$ SEAMAN
Nearby
Flash Flood Warnings in Utah, 2005Every flash flood warning in 2005
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.