Alert archive / Utah / Flash Flood Warnings in 1997
Flash Flood Warning 12, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 3, 1997, 8:00 PM MDT for San Juan County, Utah. It was in force for 4 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
- Aug 3, 1997, 8:00 PM MDT (02:00 UTC)
- Expired
- Aug 4, 1997, 12:00 AM MDT
- In force
- 4 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
County San Juan County, UT
The nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 2.0 hours before the alert went out and 202 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
- 133 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 2752 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSLC 040202 FFWSLC UTC037-040600- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 800 PM MDT SUN AUG 3 1997 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1200 AM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN UTAH ...SAN JUAN COUNTY THUNDERSTORMS WITH HEAVY RAIN ARE REDEVELOPING OVER MUCH OF SAN JUAN COUNTY AT 8PM. MANY OF THESE AREAS HAVE ALREADY HAD UP TO AN INCH OF RAIN FROM STORMS EARLIER THIS EVENING. ANOTHER 1-2 INCHES OF RAIN ARE POSSIBLE AND NORMALLY DRY WASHES AND NARROW CANYONS WILL LIKELY BE RUNNING THROUGH THE NIGHT. THE AREAS AROUND BLANDING AND MONTICELLO HAVE SEEN THE GREATEST THUNDERSTORM ACTIVITY AND PERSONS IN THESE AREAS SHOULD BE PARTICULARLY WATCHFULL TONIGHT. RESIDENTS IN THE WARNED AREA SHOULD USE CAUTION WHILE TRAVELING TONIGHT...AS SOME SECONDARY ROADS AND LOW-LYING AREAS MAY BE COVERED BY FLOvODWATERS.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 3, 5:10 PM MDT, 2 hours 50 minutes before
UTZ002-003-005-040100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 510 PM MDT SUN AUG 3 1997 ...STRONG THUNDERSTORM WINDS OVER THE GREAT SALT LAKE... SALT LAKE CITY DOPPLER RADAR INDICATES THUNDERSTORM WINDS GUSTS TO 50 MPH APPROACHING THE GREAT SALT LAKE. THESE WINDS WILL SPREAD ACROSS THE LAKE BY 600 PM AND CONTINUE THROUGH 700 PM. BOATERS SHOULD SEEK A PLACE OF SAFETY IMMEDIATELY. 2310...DAR
Special weather statement, Aug 3, 5:14 PM MDT, 2 hours 46 minutes before
UTZ002-003-005-040100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 510 PM MDT SUN AUG 3 1997 ...STRONG THUNDERSTORM WINDS OVER THE GREAT SALT LAKE... SALT LAKE CITY DOPPLER RADAR INDICATES THUNDERSTORM WINDS GUSTS TO 50 MPH APPROACHING THE GREAT SALT LAKE. THESE WINDS WILL SPREAD ACROSS THE LAKE BY 600 PM AND CONTINUE THROUGH 700 PM. BOATERS SHOULD SEEK A PLACE OF SAFETY IMMEDIATELY. 2310...DAR
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 2:24 PM MDT | Flash Flood Warning | SLC | Kane | 106 min |
| Aug 4, 4:02 PM MDT | Flash Flood Warning | SLC | Wayne | 58 min |
| Aug 4, 4:35 PM MDT | Flash Flood Warning | SLC | Garfield, Kane, Washington | 2 hr |
| Aug 4, 4:35 PM MDT | Flash Flood Warning | SLC | Piute, Wayne | 2 hr |
Nearby
Flash Flood Warnings in Utah, 1997Every flash flood warning in 1997
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.