Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 93, NWS Paducah, KY

May 31, 2018Livingston County, Marshall County, Kentucky; Massac County, Pope County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at May 31, 2018, 4:05 PM CDT for Livingston County, Marshall County, Kentucky; Massac County, Pope County, Illinois. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 31, 2018, 4:05 PM CDT (21:05 UTC)
Expired: May 31, 2018, 5:00 PM CDT
In force: 55 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Massac County, IL, Pope County, IL, Livingston County, KY, Marshall County, KY

The radar

The Paducah radar (KPAH), 28 km from the middle of the area, began a volume at 21:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 31, 1:57 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.1 hours before the alert went out and 205 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: 1202 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 234 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 31, 3:44 PM CDT, 21 minutes earlier.

Area forecast discussion, May 31, 3:44 PM CDT, 21 minutes before

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Hazardous weather outlook, May 31, 1:18 PM CDT, 2 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Paducah KY
118 pm CDT Thu May 31 2018

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-011000-
Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton-
White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope-
Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh-
Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves-
Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell-
Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean-
Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter-
Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid-
118 pm CDT Thu May 31 2018

This Hazardous Weather Outlook is for portions of southern
Illinois, southwest Indiana, western Kentucky, and southeast
Missouri.

.DAY ONE...This Afternoon and Tonight

Another round of thunderstorms will develop over parts of southeast
Missouri, southwest Illinois, and parts of west Kentucky by early
afternoon, then move east over the remainder of southern Illinois,
southwest Indiana, and west Kentucky during the middle and late
afternoon. Damaging winds and large hail will be the primary hazards.

The initial thunderstorms this afternoon may be isolated, discrete
supercells, gradually developing together to form a line of strong
to severe thunderstorms. An isolated tornado cannot be ruled out of
the question at this time.

There is also a good  potential for the training of storms this
afternoon and this evening and may produce some localized flash
flooding concerns.

Heat index values may reach 100 this afternoon near the confluence
of the Ohio and Mississippi Rivers and southward to the Missouri
Bootheel.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A chance of thunderstorms is forecast for portions of the area on
Friday, particularly across western Kentucky. Locally heavy rain
and lightning will be the main hazards.

Another chance of thunderstorms is forecast Saturday afternoon
through the night. Some of these storms may be severe with damaging
winds and large hail along with torrential rainfall and lightning.

Afternoon heat index readings may approach 100 degrees on Saturday
afternoon across portions of southeast Missouri.

.SPOTTER INFORMATION STATEMENT...

Spotters should be prepared for activation throughout the area
this afternoon and evening, and again Saturday afternoon and
evening.

DRS/SP/Smith

In the hours before

Local storm report, May 31, 3:42 PM CDT, 23 minutes before

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Local storm report, May 31, 3:53 PM CDT, 12 minutes before

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Local storm report, May 31, 3:58 PM CDT, 7 minutes before

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Local storm report, May 31, 4:02 PM CDT, 3 minutes before

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Local storm report, May 31, 4:03 PM CDT, 2 minutes before

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Local storm report, May 31, 4:05 PM CDT, 0 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
May 31, 10:51 AM CDT	Severe Thunderstorm Warning	PAH	Henderson, Union	54 min
May 31, 11:07 AM CDT	Severe Thunderstorm Warning	PAH	Henderson	53 min
May 31, 11:08 AM CDT	Areal Flood Advisory	PAH	Daviess, Henderson, McLean, Union, Webster	3 hr
May 31, 11:26 AM CDT	Severe Thunderstorm Warning	PAH	Henderson, Union	34 min
May 31, 11:36 AM CDT	Severe Thunderstorm Warning	PAH	Daviess	69 min
May 31, 11:55 AM CDT	Severe Thunderstorm Warning	PAH	Henderson	35 min
May 31, 12:10 PM CDT	Tornado Warning	PAH	Daviess	33 min
May 31, 12:45 PM CDT	Severe Thunderstorm Warning	PAH	Daviess	15 min
May 31, 1:13 PM CDT	Severe Thunderstorm Warning	PAH	Marshall	32 min
May 31, 2:10 PM CDT	Flash Flood Watch	PAH	Daviess, Henderson, McLean, Union	13 hr
May 31, 2:36 PM CDT	Severe Thunderstorm Warning	PAH	Ballard	39 min
May 31, 3:00 PM CDT	Flash Flood Warning	PAH	Ballard, McCracken	3 hr
May 31, 3:13 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, McCracken	62 min
May 31, 3:45 PM CDT	Severe Thunderstorm Warning	PAH	Livingston, McCracken	60 min
May 31, 4:08 PM CDT	Special Weather Statement	PAH	Christian	52 min
May 31, 4:30 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Trigg	30 min
May 31, 4:33 PM CDT	Areal Flood Warning	PAH	Christian, Muhlenberg, Todd	117 min
May 31, 4:34 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, McCracken	26 min
May 31, 4:47 PM CDT	Severe Thunderstorm Warning	PAH	McCracken	28 min
May 31, 4:51 PM CDT	Special Weather Statement	PAH	Muhlenberg	39 min
May 31, 4:55 PM CDT	Flash Flood Warning	PAH	Christian, Muhlenberg, Todd	3 hr
May 31, 5:03 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Todd	27 min
May 31, 5:05 PM CDT	Severe Thunderstorm Warning	PAH	Muhlenberg	25 min
May 31, 5:37 PM CDT	Special Weather Statement	PAH	Todd	23 min
May 31, 9:35 AM CDT	Special Weather Statement	PAH	Franklin, Jackson, Perry, Union, Williamson	40 min
May 31, 9:55 AM CDT	Severe Thunderstorm Warning	PAH	Franklin, Jackson, Jefferson, Perry	50 min
May 31, 10:02 AM CDT	Severe Thunderstorm Warning	PAH	Franklin, Hamilton, Saline, Williamson	28 min
May 31, 10:18 AM CDT	Severe Thunderstorm Warning	PAH	Hamilton, Wayne	42 min
May 31, 10:24 AM CDT	Severe Thunderstorm Warning	PAH	Gallatin, White	36 min
May 31, 10:30 AM CDT	Severe Thunderstorm Warning	PAH	Hamilton, Saline	30 min
May 31, 10:38 AM CDT	Severe Thunderstorm Warning	PAH	Edwards, Wabash, Wayne, White	52 min
May 31, 10:46 AM CDT	Severe Thunderstorm Warning	PAH	Jefferson	14 min
May 31, 10:58 AM CDT	Severe Thunderstorm Warning	PAH	Wayne	32 min
May 31, 6:56 PM CDT	Severe Thunderstorm Warning	PAH	White	34 min
May 31, 8:50 AM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau, Perry	17 min
May 31, 4:49 PM CDT	Severe Thunderstorm Warning	PAH	Carter	41 min
May 31, 5:14 PM CDT	Flash Flood Warning	PAH	Carter	3 hr
May 31, 5:27 PM CDT	Severe Thunderstorm Warning	PAH	Carter	48 min
May 31, 6:10 PM CDT	Special Weather Statement	PAH	Butler	50 min
May 31, 6:28 PM CDT	Special Weather Statement	PAH	Butler	17 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2018 Severe Thunderstorm Warnings in Illinois, 2018 Every severe thunderstorm 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.