Alert archive / Utah / Flash Flood Warnings in 1998
Flash Flood Warning 21, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 26, 1998, 6:15 PM MDT for Davis County, Morgan County, Weber County, Utah. It was in force for 30 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, 6:15 PM MDT (00:15 UTC)
- Expired
- Jul 26, 1998, 6:45 PM MDT
- In force
- 30 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 00:16 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 00:00Z, 0.3 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
- 1136 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1899 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 6:30 PM MDT | Flash Flood Warning | SLC | Davis, Morgan, Weber | 15 min |
| Jul 26, 9:21 PM MDT | Flash Flood Warning | SLC | Box Elder | 54 min |
| Jul 27, 1:25 AM MDT | Flash Flood Warning | SLC | Box Elder | 65 min |
| Jul 27, 2:10 PM MDT | Flash Flood Warning | SLC | Garfield, Iron, Kane | 2 hr |
| Jul 27, 2:51 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Jul 27, 5:37 PM MDT | Flash Flood Warning | SLC | Iron, Washington | 83 min |
| Jul 27, 5:47 PM MDT | Flash Flood Warning | SLC | Iron, Washington | 73 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.