Alert archive / Minnesota / Flood Watches in 2022

Flood Watch 4, NWS Grand Forks, ND

May 12, 202217 counties in North Dakota; 18 counties in Minnesota

NWS Grand Forks, ND issued this flood watch at May 12, 2022, 4:22 AM CDT for 17 counties in North Dakota; 18 counties in Minnesota. It took effect at May 12, 2022, 6:00 AM CDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
May 12, 2022, 4:22 AM CDT (09:22 UTC)
In effect from
May 12, 2022, 6:00 AM CDT
Expired
May 13, 2022, 12:00 AM CDT
In force
18 hr
Issued by
NWS Grand Forks, ND
Flood severity
None
All 35 counties

Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Hubbard County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 32 km from the middle of the area, began a volume at 09:25 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 9.4 hours before the alert went out and 300 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.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2022-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2022-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1677 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Grand Forks, ND wrote its last area forecast discussion before this flood watch went out at May 12, 4:00 AM CDT, 22 minutes earlier.

Area forecast discussion, May 12, 4:00 AM CDT, 22 minutes before
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Hazardous weather outlook, May 11, 3:29 PM CDT, 12 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Grand Forks ND
329 PM CDT Wed May 11 2022

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-122030-
West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods-
West Marshall-East Marshall-North Beltrami-Pennington-Red Lake-
East Polk-North Clearwater-South Beltrami-Mahnomen-
South Clearwater-Hubbard-West Becker-East Becker-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
Western Walsh-
329 PM CDT Wed May 11 2022

This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.

.DAY ONE...This Afternoon and Tonight

Showers and thunderstorms will develop during the late afternoon
and evening, with the most intense storms in the southern valley
and west central Minnesota. The strongest storms may become
severe with hail to the size of golf balls and wind gusts to 60
mph. Additionally there is also a threat for flash flooding.

River and overland flooding continues for portions of the Red
River Valley along with the Devils Lake basin. Refer to the
latest flood warnings and statements for detailed information on
specific locations.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Another round of thunderstorms are expected Thursday with the
strongest storms in the late afternoon and evening. These storms
will be capable of hail greater than 2 inches in size, winds to
75 mph and a few tornadoes along with the threat for flash
flooding.

River and overland flooding continues for portions of the Red
River Valley along with the Devils Lake basin. Refer to the
latest flood warnings and statements for detailed information on
specific locations.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 11, 7:00 PM CDTFlash Flood WarningFGFRichland6 hr
May 11, 8:16 PM CDTSpecial Weather StatementFGFWalsh29 min
May 12, 8:12 AM CDTSpecial Weather StatementFGFRichland48 min
May 12, 9:05 AM CDTSpecial Weather StatementFGFBenson, Eddy, Griggs, Nelson, Ramsey25 min
May 12, 9:56 AM CDTAreal Flood WarningFGFEddy, Grand Forks, Griggs, Nelson6 days
May 12, 10:09 AM CDTSpecial Weather StatementFGFCavalier, Pembina, Ramsey, Walsh66 min
May 12, 1:29 PM CDTHigh Wind WatchFGFBarnes, Benson, Cavalier, Eddy, Griggs, Nelson and 3 more13 hr
May 12, 5:09 PM CDTSpecial Weather StatementFGFGriggs51 min
May 12, 5:23 PM CDTSevere Thunderstorm WarningFGFGrand Forks, Griggs, Nelson, Steele52 min
May 12, 6:13 PM CDTSpecial Weather StatementFGFGrand Forks47 min
May 12, 6:47 PM CDTSevere Thunderstorm Warning Considerable damage threatFGFRansom, Richland, Sargent58 min
May 12, 6:55 PM CDTSpecial Weather StatementFGFGrand Forks50 min
May 12, 1:02 AM CDTAreal Flood WarningFGFClay, Wilkin66 hr
May 12, 11:19 AM CDTRiver Flood WarningFGFRoseau6 days
May 12, 6:54 PM CDTSpecial Weather StatementFGFBeltrami, Clearwater51 min

Nearby

Flood Watches in Minnesota, 2022Flood Watches in North Dakota, 2022Every flood watch in 2022

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.