Alert archive / Utah / Flash Flood Warnings in 1998
Flash Flood Warning 52, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Sep 6, 1998, 3:11 PM MDT for San Juan County, Utah. It was in force for 79 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Sep 6, 1998, 3:11 PM MDT (21:11 UTC)
- Expired
- Sep 6, 1998, 4:30 PM MDT
- In force
- 79 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County San Juan County, UT
The radar
The Cedar City radar (KICX), 206 km from the middle of the area, began a volume at 21:12 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 12:00Z, 9.2 hours before the alert went out and 237 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
- 1713 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 93 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 062113
FFWSLC
UTC037-062215-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
311 PM MDT SUN SEP 6 1998
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN SAN JUAN COUNTY IN UTAH
* UNTIL 430 PM MDT
* AT 305 PM MDT WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
RAIN 15 MILES EAST OF RAINBOW BRIDGE...OR AT NAVAJO MOUNTAIN
TRADING POST...MOVING NORTHEAST AT 15 MPH.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
...STREAMS AND DRY WASHES. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND
MUDSLIDES IN STEEP TERRAIN.
TO REPORT FLASH FLOODING HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY.
STAY TUNED TO LOCAL TELEVISION...RADIO...CABLE TV...OR NOAA WEATHER
RADIO FOR UPDATES.
LAT...LON 3704 11102 3702 11023 3722 11019 3734 11056
~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
Local storm report, Sep 6, 1:00 PM MDT, 2 hours 11 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 100 PM MDT SUN SEP 6 1998 TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS.... ...COUNTY LOCATION.... 0430 PM 28 W OF ~BIG WATER UT FLASH FLOODING. ROADS 09/05/98 KANE WASHED OUT. END
Local storm report, Sep 6, 1:00 PM MDT, 2 hours 11 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 100 PM MDT SUN SEP 6 1998 TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS.... ...COUNTY LOCATION.... 0430 PM 28 W OF ~BIG WATER UT FLASH FLOODING. ROADS 09/05/98 KANE WASHED OUT. END
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 4:24 PM MDT | Flash Flood Warning | SLC | Piute, Sevier | 81 min |
| Sep 6, 5:49 PM MDT | Flash Flood Warning | SLC | Piute, Sevier | 41 min |
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.