Alert archive / North Dakota / Heavy Snow Warnings in 2007
Heavy Snow Warning 1, NWS Grand Forks, ND
NWS Grand Forks, ND issued this heavy snow warning at Feb 24, 2007, 8:40 PM CST for Barnes County, Griggs County, North Dakota. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 24, 2007, 8:40 PM CST (02:40 UTC)
- Expired
- Feb 25, 2007, 4:26 AM CST
- In force
- 8 hr
- Issued by
- NWS Grand Forks, ND
Counties Barnes County, ND, Griggs County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 73 km from the middle of the area, began a volume at 02:46 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
International Fa, MN (KINL), launched 00:00Z, 2.7 hours before the alert went out and 393 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heavy snow warning 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 heavy snow warning went out at Feb 24, 3:02 PM CST, 5 hours 38 minutes earlier.
Area forecast discussion, Feb 24, 3:02 PM CST, 5 hours 38 minutes before
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</html>Hazardous weather outlook, Feb 24, 3:08 PM CST, 5 hours 32 minutes before
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</html>Nearby
Heavy Snow Warnings in North Dakota, 2007Every heavy snow warning in 2007
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.