Alert archive / Utah / Flash Flood Warnings in 1998
Flash Flood Warning 20, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 26, 1998, 5:18 PM MDT for Davis County, Morgan County, Weber County, Utah. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 26, 1998, 5:18 PM MDT (23:18 UTC)
- Expired
- Jul 26, 1998, 6:15 PM MDT
- In force
- 57 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Davis County, UT, Morgan County, UT, Weber County, UT
The radar
The Salt Lake City radar (KMTX), 51 km from the middle of the area, began a volume at 23:18 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
Salt Lake City I, UT (KSLC), launched 12:00Z, 11.3 hours before the alert went out and 38 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
- 86 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 1487 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 56 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 262325 RRA
FFWSLC
UTC011-029-057-270015-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
518 PM MDT SUN JUL 26 1998
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL WEBER COUNTY IN UTAH
WEST CENTRAL MORGAN COUNTY IN UTAH
NORTHEASTERN DAVIS COUNTY IN UTAH
INCLUDING MORGAN
* UNTIL 615 PM MDT
* AT 515 PM MDT THE PUBLIC REPORTED VERY HEAVY RAIN IN MOUNTAIN
GREEN...OR ABOUT 15 MILES NORTHWEST OF MORGAN. ALSO DOPPLER RADAR
INDICATES HEAVY RAINS OCCURRING FROM NEAR HUNTSVILLE TO THE MORGAN
VALLEY. THESE STORMS ARE MOVING TO THE SOUTHWEST AT 5 MILES PER
HOUR.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
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 F>OOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.
$$The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:13 PM MDT | Flash Flood Warning | SLC | Emery, Garfield, San Juan, Wayne | 2 hr |
| Jul 25, 9:15 PM MDT | Flash Flood Warning | SLC | Garfield, San Juan, Wayne | 8 hr |
| Jul 25, 9:15 PM MDT | Flash Flood Warning | SLC | Emery | 8 hr |
| Jul 25, 9:53 PM MDT | Flash Flood Warning | SLC | Emery | 2 hr |
| Jul 26, 12:39 PM MDT | Flash Flood Warning | SLC | Sanpete, Sevier | 2 hr |
| Jul 26, 1:00 PM MDT | Flash Flood Warning | SLC | San Juan | 3 hr |
| Jul 26, 5:00 PM MDT | Flash Flood Warning | SLC | Kane | 2 hr |
Nearby
Flash Flood Warnings in Utah, 1998Every flash flood warning in 1998
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.