Alert archive / North Dakota / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Forks, ND

July 24, 2012Grand Forks County, Nelson County, North Dakota

NWS Grand Forks, ND issued this special weather statement at Jul 24, 2012, 10:11 PM CDT for Grand Forks County, Nelson County, North Dakota. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 24, 2012, 10:11 PM CDT (03:11 UTC)
Expired: Jul 24, 2012, 11:15 PM CDT
In force: 64 min
Issued by: NWS Grand Forks, ND

Counties Grand Forks County, ND, Nelson County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 56 km from the middle of the area, began a volume at 03:14 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, 3.2 hours before the alert went out and 263 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: 2307 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 24, 7:17 PM CDT, 2 hours 54 minutes earlier.

Area forecast discussion, Jul 24, 7:17 PM CDT, 2 hours 54 minutes before

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Hazardous weather outlook, Jul 24, 6:43 AM CDT, 15 hours 28 minutes before

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In the hours before

Special weather statement, Jul 24, 10:11 PM CDT, 0 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 24, 10:01 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Wilkin	59 min
Jul 24, 10:59 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Wilkin	61 min
Jul 24, 11:28 PM CDT	Severe Thunderstorm Warning	FGF	Polk	62 min
Jul 25, 12:01 AM CDT	Areal Flood Advisory	FGF	Clay, Wilkin	10 hr
Jul 25, 12:20 AM CDT	Areal Flood Advisory	FGF	Polk	3 hr
Jul 25, 12:28 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Otter Tail, Wilkin	62 min
Jul 25, 1:08 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Hubbard, Otter Tail, Wadena	67 min
Jul 25, 3:18 AM CDT	Areal Flood Advisory	FGF	Becker, Clay, Hubbard, Otter Tail, Wadena, Wilkin	7 hr
Jul 25, 5:42 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	63 min
Jul 25, 6:02 PM CDT	Special Weather Statement	FGF	Becker, Clearwater, Hubbard, Mahnomen, Otter Tail, Wadena and 1 more	58 min
Jul 25, 6:13 PM CDT	Special Weather Statement	FGF	Lake of the Woods	62 min
Jul 24, 8:25 PM CDT	Areal Flood Advisory	FGF	Benson, Ramsey	5 hr
Jul 24, 10:20 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom	55 min
Jul 24, 10:28 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson	62 min

Nearby

Special Weather Statements in North Dakota, 2012 Every special weather statement in 2012

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.