Alert archive / Iowa / Winter Storm Watches in 2005

Winter Storm Watch 8, NWS Des Moines, IA

December 13, 200516 counties in Iowa

NWS Des Moines, IA issued this winter storm watch at Dec 13, 2005, 4:10 AM CST for 16 counties in Iowa. It took effect at Dec 14, 2005, 2:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Dec 13, 2005, 4:10 AM CST (10:10 UTC)
In effect from: Dec 14, 2005, 2:00 AM CST
Expired: Dec 13, 2005, 3:54 PM CST
In force
Issued by: NWS Des Moines, IA

Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Tama County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 118 km from the middle of the area, began a volume at 10:15 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

Minneapolis, MN (KMPX), launched 00:00Z, 10.2 hours before the alert went out and 234 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: 867 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 136 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 winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this winter storm watch went out at Dec 12, 9:59 PM CST, 6 hours 11 minutes earlier.

Area forecast discussion, Dec 12, 9:59 PM CST, 6 hours 11 minutes before

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Hazardous weather outlook, Dec 12, 10:44 PM CST, 5 hours 26 minutes before

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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 12, 9:55 PM CST	Dense Fog Advisory	DMX	Boone, Calhoun, Cerro Gordo, Emmet, Franklin, Greene and 12 more	10 hr
Dec 13, 3:54 PM CST	Snow and Blowing Snow Advisory	DMX	Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 11 more	12 hr
Dec 13, 3:54 PM CST	Winter Storm Warning	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 10 more	12 hr

Nearby

Winter Storm Watches in Iowa, 2005 Every winter storm watch in 2005

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.