Alert archive / Utah / River Flood Warnings in 2023

River Flood Warning 3, NWS Salt Lake City, UT

March 15, 2023Washington County, Utah

NWS Salt Lake City, UT issued this river flood warning at Mar 15, 2023, 8:19 PM MDT for Washington County, Utah. It took effect at Mar 15, 2023, 9:10 PM MDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Mar 15, 2023, 8:19 PM MDT (02:19 UTC)
In effect from: Mar 15, 2023, 9:10 PM MDT
Expired: Mar 16, 2023, 6:00 PM MDT
In force: 21 hr
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Flood severity: Minor

County Washington County, UT

The radar

The Cedar City radar (KICX), 66 km from the middle of the area, began a volume at 02:20 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 river

Written for the forecast point Santa Clara River near St. George (SRSU1). The gauge peaked at 17.67 ft at Mar 16, 2023, 12:00 AM MDT.

Action stage: 12.9 ft
Minor stage: 13.9 ft
Moderate stage: 14.3 ft
Major stage: 14.7 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 09413000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Salt Lake City, UT wrote its last area forecast discussion before this river flood warning went out at Mar 15, 4:14 PM MDT, 4 hours 5 minutes earlier.

Area forecast discussion, Mar 15, 4:14 PM MDT, 4 hours 5 minutes before

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The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 15, 10:36 PM MDT	Areal Flood Advisory	SLC	Iron, Washington	9 hr

Nearby

River Flood Warnings in Utah, 2023 Every river flood warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.