Alert archive / Kentucky / Winter Storm Watches in 2018

Winter Storm Watch 2, NWS Louisville, KY

March 23, 20184 counties in Kentucky; Jefferson County, Indiana

NWS Louisville, KY issued this winter storm watch at Mar 23, 2018, 3:56 AM EDT for 4 counties in Kentucky; Jefferson County, Indiana. It took effect at Mar 24, 2018, 2:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 23, 2018, 3:56 AM EDT (07:56 UTC)
In effect from: Mar 24, 2018, 2:00 AM EDT
Expired: Mar 23, 2018, 3:21 PM EDT
In force
Issued by: NWS Louisville, KY

Counties Jefferson County, IN, Bourbon County, KY, Harrison County, KY, Nicholas County, KY, Scott County, KY

The radar

The Cincinnati radar (KILN), 127 km from the middle of the area, began a volume at 07:56 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

Lincoln, IL (KILX), launched 00:00Z, 7.9 hours before the alert went out and 401 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: 2067 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 23 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 Louisville, KY wrote its last area forecast discussion before this winter storm watch went out at Mar 23, 3:48 AM EDT, 8 minutes earlier.

Area forecast discussion, Mar 23, 3:48 AM EDT, 8 minutes before

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Hazardous weather outlook, Mar 22, 3:14 PM EDT, 12 hours 42 minutes before

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In the hours before

Special weather statement, Mar 22, 11:32 PM EDT, 4 hours 24 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 3:21 PM EDT	Winter Storm Warning	LMK	Bourbon, Harrison, Nicholas, Scott	35 hr
Mar 23, 3:21 PM EDT	Winter Weather Advisory	LMK	Clark, Fayette, Franklin, Henry, Trimble, Woodford	28 hr

Nearby

Winter Storm Watches in Kentucky, 2018 Winter Storm Watches in Indiana, 2018 Every winter storm watch 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.