Alert archive / Montana / Areal Flood Advisories in 2018

Areal Flood Advisory 21, NWS Great Falls, MT

April 22, 2018Madison County, Montana

NWS Great Falls, MT issued this areal flood advisory at Apr 22, 2018, 8:54 AM MDT for Madison County, Montana. It was in force for 53 hr.

The area

The counties it named.

The facts

Issued: Apr 22, 2018, 8:54 AM MDT (14:54 UTC)
Expired: Apr 24, 2018, 1:35 PM MDT
In force: 53 hr
Issued by: NWS Great Falls, MT
Area: Storm-based polygon

County Madison County, MT

The radar

The Great Falls radar (KTFX), 244 km from the middle of the area, began a volume at 14:58 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.

What forecasters said that day

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

NWS Great Falls, MT wrote its last area forecast discussion before this areal flood advisory went out at Apr 21, 5:03 PM MDT, 15 hours 51 minutes earlier.

Area forecast discussion, Apr 21, 5:03 PM MDT, 15 hours 51 minutes before

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The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 2:25 PM MDT	Winter Weather Advisory	TFX		25 hr

Nearby

Areal Flood Advisories in Montana, 2018 Every areal flood advisory in 2018

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.