Alert archive / North Dakota / River Flood Watches in 2011

River Flood Watch 4, NWS Grand Forks, ND

July 20, 2011Grand Forks County, North Dakota; Polk County, Minnesota

NWS Grand Forks, ND issued this river flood watch at Jul 20, 2011, 10:49 AM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It took effect at Jul 23, 2011, 9:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Jul 20, 2011, 10:49 AM CDT (15:49 UTC)
In effect from: Jul 23, 2011, 9:00 PM CDT
Expired: Jul 22, 2011, 9:43 AM CDT
In force
Issued by: NWS Grand Forks, ND
Flood severity: None

Counties Polk County, MN, Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 46 km from the middle of the area, began a volume at 15:53 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 Red River of the North at Grand Forks (EGFM5). The gauge peaked at 27.01 ft at Jul 23, 2011, 9:00 AM CDT.

Action stage: 27 ft
Minor stage: 28 ft
Moderate stage: 40 ft
Major stage: 46 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05082500, 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 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 river flood watch went out at Jul 20, 10:38 AM CDT, 11 minutes earlier.

Area forecast discussion, Jul 20, 10:38 AM CDT, 11 minutes before

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Hazardous weather outlook, Jul 20, 7:00 AM CDT, 3 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
700 AM CDT WED JUL 20 2011

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-211200-
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-
700 AM CDT WED JUL 20 2011

...SOME SEVERE THUNDERSTORMS ARE EXPECTED WEDNESDAY MORNING...
...STORMS MAY REDEVELOP AGAIN THIS AFTERNOON AND EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH
DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...TODAY AND THIS EVENING

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1 PM CDT FOR
MAINLY NORTHEAST NORTH DAKOTA AND PARTS OF NORTHWEST MINNESOTA.
THE STORMS WILL PRODUCE DAMAGING WINDS...SOME LARGE HAIL AND
LOCALLY HEAVY RAINFALL. A TORNADO MAY BE POSSIBLE.

A SLIGHT RISK OF SEVERE THUNDERSTORMS WILL BE POSSIBLE LATER THIS
AFTERNOON AND EVENING ROUGHLY EAST OF A LINE FROM ASHBY MINNESOTA
TO NECHE NORTH DAKOTA. THE STORMS WILL BE MOSTLY LIKELY AFTER 1 PM
AND SHOULD MOVE OUT OF THE AREA BY 7 OR 8 PM WEDNESDAY. THE STORMS
WILL PRODUCE SOME LARGE HAIL...DAMAGING WINDS AND LOCALLY HEAVY
RAIN. A TORNADO WILL ALSO BE POSSIBLE.

A COLD FRONT WILL MOVE IN FROM THE WEST THIS AFTERNOON AND PRODUCE
THE STRONG THUNDERSTORMS. COOLER AND LESS HUMID WEATHER WILL MOVE
INTO THE REGION ON THURSDAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A SLIGHT RISK OF SEVERE THUNDERSTORMS WILL BE POSSIBLE LATE FRIDAY
AFTERNOON AND FRIDAY NIGHT. THE STORMS CAN BE EXPECTED WEST OF A
LINE FROM BADOURA MINNESOTA TO MAPLE BAY TO LANCASTER MINNESOTA.
THE STORMS WILL PRODUCE SOME LARGE HAIL...DAMAGING WINDS AND
LOCALLY HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

HOPPES

In the hours before

Local storm report, Jul 20, 10:18 AM CDT, 31 minutes before

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Local storm report, Jul 20, 10:19 AM CDT, 30 minutes before

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Local storm report, Jul 20, 10:20 AM CDT, 29 minutes before

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Local storm report, Jul 20, 10:22 AM CDT, 27 minutes before

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Local storm report, Jul 20, 10:23 AM CDT, 26 minutes before

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Local storm report, Jul 20, 10:24 AM CDT, 25 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 9:16 PM CDT	River Flood Warning	FGF	Cass, Richland	9 days
Jul 20, 4:08 AM CDT	Severe Thunderstorm Warning	FGF	Walsh	67 min
Jul 20, 4:11 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey, Towner	64 min
Jul 20, 5:00 AM CDT	Tornado Warning	FGF	Ramsey	45 min
Jul 20, 5:30 AM CDT	Tornado Warning	FGF	Ramsey, Walsh	45 min
Jul 20, 5:41 AM CDT	Severe Thunderstorm Warning	FGF	Pembina, Walsh	34 min
Jul 20, 5:53 AM CDT	Areal Flood Advisory	FGF	Benson, Cavalier, Ramsey, Towner, Walsh	9 hr
Jul 20, 6:07 AM CDT	Tornado Warning	FGF	Grand Forks, Nelson, Walsh	38 min
Jul 20, 6:28 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Ramsey, Towner	62 min
Jul 20, 6:40 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Walsh	50 min
Jul 20, 7:21 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Ramsey, Towner, Walsh	54 min
Jul 20, 8:08 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Nelson, Pembina, Ramsey, Walsh	67 min
Jul 20, 8:59 AM CDT	Areal Flood Advisory	FGF	Cavalier, Pembina, Walsh	6 hr
Jul 20, 10:49 AM CDT	River Flood Watch	FGF	Grand Forks, Walsh	47 hr
Jul 20, 7:24 AM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall, Roseau	51 min
Jul 20, 7:41 AM CDT	Severe Thunderstorm Warning	FGF	Kittson, Roseau	34 min
Jul 20, 7:59 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Kittson, Lake of the Woods, Marshall, Roseau	61 min
Jul 20, 8:27 AM CDT	Tornado Warning	FGF	Roseau	48 min
Jul 20, 8:58 AM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	47 min
Jul 20, 9:16 AM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	44 min

Nearby

River Flood Watches in North Dakota, 2011 River Flood Watches in Minnesota, 2011 Every river flood watch in 2011

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.