Alert archive / Kentucky / Winter Storm Warnings in 2018

Winter Storm Warning 1, NWS Paducah, KY

January 11, 201822 counties in Kentucky; 19 counties in Illinois; Mississippi County, New Madrid County, Missouri

NWS Paducah, KY issued this winter storm warning at Jan 11, 2018, 1:34 PM CST for 22 counties in Kentucky; 19 counties in Illinois; Mississippi County, New Madrid County, Missouri. It took effect at Jan 11, 2018, 9:00 PM CST. It was in force for 24 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: Jan 11, 2018, 1:34 PM CST (19:34 UTC)
In effect from: Jan 11, 2018, 9:00 PM CST
Expired: Jan 12, 2018, 9:00 PM CST
In force: 24 hr
Issued by: NWS Paducah, KY

All 43 counties

Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Mississippi County, MO, New Madrid County, MO

The radar

The Paducah radar (KPAH), 49 km from the middle of the area, began a volume at 19:38 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.6 hours before the alert went out and 214 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: 545 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 362 m²/s²
0-3 km storm-relative helicity: 386 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before this winter storm warning went out at Jan 11, 12:22 PM CST, 1 hour 12 minutes earlier.

Area forecast discussion, Jan 11, 12:22 PM CST, 1 hour 12 minutes before

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Hazardous weather outlook, Jan 11, 4:03 AM CST, 9 hours 31 minutes before

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The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 11, 1:34 PM CST	Winter Weather Advisory	PAH	Bollinger, Butler, Cape Girardeau, Carter, Perry, Ripley and 3 more	18 hr

Nearby

Winter Storm Warnings in Kentucky, 2018 Winter Storm Warnings in Illinois, 2018 Winter Storm Warnings in Missouri, 2018 Every winter storm warning in 2018

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.