Alert archive / North Dakota / Flash Flood Watches in 2009

Flash Flood Watch 1, NWS Grand Forks, ND

June 26, 20098 counties in North Dakota; Kittson County, Marshall County, Minnesota

NWS Grand Forks, ND issued this flash flood watch at Jun 26, 2009, 4:22 AM CDT for 8 counties in North Dakota; Kittson County, Marshall County, Minnesota. It took effect at Jun 26, 2009, 7:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jun 26, 2009, 4:22 AM CDT (09:22 UTC)
In effect from: Jun 26, 2009, 7:00 PM CDT
Expired: Jun 27, 2009, 4:10 AM CDT
In force: 9 hr
Issued by: NWS Grand Forks, ND
Flood severity: None

Counties Kittson County, MN, Marshall County, MN, Benson County, ND, Cavalier County, ND, Eddy County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Towner County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 111 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 262 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2549 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 86 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 flash 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 flash flood watch went out at Jun 26, 2:30 AM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jun 26, 2:30 AM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Jun 25, 6:57 AM CDT, 21 hours 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
Jun 26, 12:20 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	40 min
Jun 26, 2:55 PM CDT	Special Weather Statement	FGF	Towner	50 min
Jun 26, 5:15 PM CDT	Severe Thunderstorm Warning	FGF	Nelson, Walsh	60 min
Jun 26, 5:22 PM CDT	Tornado Warning	FGF	Benson	53 min
Jun 26, 5:32 PM CDT	Tornado Warning	FGF	Grand Forks, Nelson	58 min
Jun 26, 5:44 PM CDT	Flash Flood Warning	FGF	Cavalier, Towner	13 hr
Jun 26, 5:56 PM CDT	Tornado Warning	FGF	Pembina, Walsh	64 min
Jun 26, 6:05 PM CDT	Flash Flood Warning	FGF	Nelson, Walsh	14 hr
Jun 26, 6:10 PM CDT	Tornado Warning	FGF	Grand Forks, Nelson	65 min
Jun 26, 6:25 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Pembina, Walsh	65 min
Jun 26, 6:46 PM CDT	Tornado Warning	FGF	Grand Forks	59 min
Jun 26, 6:55 PM CDT	Tornado Warning	FGF	Grand Forks, Walsh	65 min

Nearby

Flash Flood Watches in North Dakota, 2009 Flash Flood Watches in Minnesota, 2009 Every flash flood watch in 2009

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.