Alert archive / Montana / River Flood Warnings in 2018

River Flood Warning 10, NWS Great Falls, MT

April 17, 2018Blaine County, Hill County, Montana

NWS Great Falls, MT issued this river flood warning at Apr 17, 2018, 6:58 PM MDT for Blaine County, Hill County, Montana. It took effect at Apr 17, 2018, 9:45 PM MDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Apr 17, 2018, 6:58 PM MDT (00:58 UTC)
In effect from: Apr 17, 2018, 9:45 PM MDT
Expired: Apr 18, 2018, 11:17 AM MDT
In force: 14 hr
Issued by: NWS Great Falls, MT
Area: Storm-based polygon
Flood severity: Minor

Counties Blaine County, MT, Hill County, MT

The radar

The Great Falls radar (KTFX), 182 km from the middle of the area, began a volume at 01:00 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 Lodge Creek below McRae Creek at International Boundary (LGEM8).

Action stage: 6 ft
Minor stage: 7 ft
Moderate stage: 9.5 ft
Major stage: 12 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06145500, 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 Great Falls, MT wrote its last area forecast discussion before this river flood warning went out at Apr 17, 5:25 PM MDT, 1 hour 33 minutes earlier.

Area forecast discussion, Apr 17, 5:25 PM MDT, 1 hour 33 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 17, 8:24 PM MDT	Areal Flood Warning	TFX	Blaine, Hill	10 days
Apr 17, 8:28 PM MDT	Areal Flood Advisory	TFX	Liberty	21 hr
Apr 18, 4:49 PM MDT	Areal Flood Warning	TFX	Liberty, Toole	5 days
Apr 18, 5:29 PM MDT	Areal Flood Advisory	TFX	Pondera	4 days

Nearby

River Flood Warnings in Montana, 2018 Every river flood warning 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; the gauge from the NWS water service and the USGS.