Alert archive / Iowa / Winter Storm Watches in 2007

Winter Storm Watch 2, NWS Quad Cities, IA

February 11, 200717 counties in Iowa; 10 counties in Illinois; Clark County, Scotland County, Missouri

NWS Quad Cities, IA issued this winter storm watch at Feb 11, 2007, 3:02 AM CST for 17 counties in Iowa; 10 counties in Illinois; Clark County, Scotland County, Missouri. It took effect at Feb 12, 2007, 6:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 11, 2007, 3:02 AM CST (09:02 UTC)
In effect from: Feb 12, 2007, 6:00 AM CST
Expired: Feb 12, 2007, 3:34 AM CST
In force
Issued by: NWS Quad Cities, IA

All 29 counties

Benton County, IA, Cedar County, IA, Clinton County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Bureau County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, McDonough County, IL, Mercer County, IL, Putnam County, IL, Rock Island County, IL, Warren County, IL, Whiteside County, IL, Clark County, MO, Scotland County, MO

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.0 hours before the alert went out and 246 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: 1527 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 130 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 Quad Cities, IA wrote its last area forecast discussion before this winter storm watch went out at Feb 10, 9:12 PM CST, 5 hours 50 minutes earlier.

Area forecast discussion, Feb 10, 9:12 PM CST, 5 hours 50 minutes before

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 11, 3:04 PM CST	Snow Advisory	DVN	Buchanan, Delaware, Dubuque, Jackson	13 hr

Nearby

Winter Storm Watches in Iowa, 2007 Winter Storm Watches in Illinois, 2007 Winter Storm Watches in Missouri, 2007 Every winter storm watch 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.