Alert archive / Missouri / Snow Advisories in 2007

Snow Advisory 8, NWS Kansas City, MO

April 13, 200726 counties in Missouri; 7 counties in Kansas

NWS Kansas City, MO issued this snow advisory at Apr 13, 2007, 3:30 AM CDT for 26 counties in Missouri; 7 counties in Kansas. It took effect at Apr 13, 2007, 9:15 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Apr 13, 2007, 3:30 AM CDT (08:30 UTC)
In effect from: Apr 13, 2007, 9:15 PM CDT
Expired: Apr 14, 2007, 7:51 AM CDT
In force: 11 hr
Issued by: NWS Kansas City, MO

All 33 counties

Atchison County, KS, Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Grundy County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Pettis County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 56 km from the middle of the area, began a volume at 08:34 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

Topeka, KS (KTOP), launched 00:00Z, 8.5 hours before the alert went out and 143 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: 1392 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -20 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 snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this snow advisory went out at Apr 12, 7:20 PM CDT, 8 hours 10 minutes earlier.

Area forecast discussion, Apr 12, 7:20 PM CDT, 8 hours 10 minutes before

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Hazardous weather outlook, Apr 12, 1:06 PM CDT, 14 hours 24 minutes before

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Nearby

Snow Advisories in Missouri, 2007 Snow Advisories in Kansas, 2007 Every snow advisory 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.