Alert archive / Montana / River Flood Warnings in 2020

River Flood Warning 1, NWS Great Falls, MT

June 19, 2020Beaverhead County, Madison County, Montana

NWS Great Falls, MT issued this river flood warning at Jun 19, 2020, 7:53 AM MDT for Beaverhead County, Madison County, Montana. It took effect at Jun 19, 2020, 12:00 PM MDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Jun 19, 2020, 7:53 AM MDT (13:53 UTC)
In effect from: Jun 19, 2020, 12:00 PM MDT
Expired: Jun 20, 2020, 4:13 AM MDT
In force: 16 hr
Issued by: NWS Great Falls, MT
Area: Storm-based polygon
Flood severity: Minor

Counties Beaverhead County, MT, Madison County, MT

The radar

The Pocatello radar (KSFX), 236 km from the middle of the area, began a volume at 13:59 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 Big Hole River near Melrose (MLRM8).

Action stage: 5 ft
Minor stage: 6 ft
Moderate stage: 7.5 ft
Major stage: 8 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06025500, 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 Jun 18, 5:30 PM MDT, 14 hours 23 minutes earlier.

Area forecast discussion, Jun 18, 5:30 PM MDT, 14 hours 23 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
Jun 19, 12:20 PM MDT	Special Weather Statement	TFX	Pondera	25 min
Jun 19, 2:15 PM MDT	Special Weather Statement	TFX	Teton	30 min
Jun 19, 2:18 PM MDT	Special Weather Statement	TFX	Cascade	27 min
Jun 19, 2:29 PM MDT	Special Weather Statement	TFX	Cascade	31 min
Jun 19, 2:35 PM MDT	Special Weather Statement	TFX	Pondera	25 min
Jun 19, 2:44 PM MDT	Special Weather Statement	TFX	Cascade	31 min
Jun 19, 2:57 PM MDT	Special Weather Statement	TFX	Cascade	33 min
Jun 19, 3:12 PM MDT	Special Weather Statement	TFX	Cascade	33 min
Jun 19, 3:24 PM MDT	Special Weather Statement	TFX	Pondera	21 min
Jun 19, 3:35 PM MDT	Special Weather Statement	TFX	Cascade	25 min

Nearby

River Flood Warnings in Montana, 2020 Every river flood warning in 2020

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.