Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 1, NWS Paducah, KY

February 7, 20174 counties in Missouri

NWS Paducah, KY issued this severe thunderstorm warning at Feb 7, 2017, 2:54 AM CST for 4 counties in Missouri. It was in force for 23 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: Feb 7, 2017, 2:54 AM CST (08:54 UTC)
Expired: Feb 7, 2017, 3:17 AM CST
In force: 23 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Butler County, MO, Carter County, MO, Ripley County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 171 km from the middle of the area, began a volume at 08:56 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 6, 10:59 PM CST	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 00:00Z, 8.9 hours before the alert went out and 235 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: 381 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 750 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 336 m²/s²
0-3 km storm-relative helicity: 453 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 6.3

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 Feb 7, 2:16 AM CST, 38 minutes earlier.

Area forecast discussion, Feb 7, 2:16 AM CST, 38 minutes before

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Hazardous weather outlook, Feb 6, 11:34 PM CST, 3 hours 20 minutes before

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In the hours before

Special weather statement, Feb 7, 2:04 AM CST, 50 minutes before

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Local storm report, Feb 7, 2:12 AM CST, 42 minutes before

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Local storm report, Feb 7, 2:16 AM CST, 38 minutes before

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Special weather statement, Feb 7, 2:41 AM CST, 13 minutes before

Special Weather Statement
National Weather Service Paducah KY
241 AM CST TUE FEB 7 2017

MOZ100-107>109-070930-
Butler MO-Carter MO-Wayne MO-Ripley MO-
241 AM CST TUE FEB 7 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CARTER...NORTHERN
RIPLEY...SOUTH CENTRAL WAYNE AND NORTHWESTERN BUTLER COUNTIES UNTIL
330 AM CST...

At 240 AM CST, Doppler radar was tracking a strong thunderstorm near
Handy, or 11 miles northwest of Doniphan, moving northeast at 45 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Ellsinore, Williamsville, Budapest, Hendrickson, Hunter, Milltown,
Brush Arbor and Grandin.

A severe thunderstorm watch remains in effect until 500 AM CST for
southeastern Missouri.

LAT...LON 3682 9107 3705 9047 3683 9035 3664 9102
TIME...MOT...LOC 0840Z 245DEG 41KT 3674 9097

DRS

Special weather statement, Feb 7, 2:43 AM CST, 11 minutes before

Special Weather Statement
National Weather Service Paducah KY
243 AM CST TUE FEB 7 2017

KYZ006-008-009-070930-
Marshall KY-Calloway KY-Graves KY-
243 AM CST TUE FEB 7 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CALLOWAY...SOUTHEASTERN
MARSHALL AND SOUTHEASTERN GRAVES COUNTIES UNTIL 330 AM CST...

At 243 AM CST, Doppler radar was tracking a strong thunderstorm near
Sedalia, or 10 miles west of Murray, moving northeast at 30 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Murray, Lynnville, Hardin, Kirksey and Harris Grove.

LAT...LON 3657 8867 3691 8825 3667 8810 3650 8862
      3650 8865
TIME...MOT...LOC 0843Z 232DEG 26KT 3663 8850

DRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 2:04 AM CST	Special Weather Statement	PAH	Calloway, Trigg	41 min
Feb 7, 2:43 AM CST	Special Weather Statement	PAH	Calloway	47 min
Feb 7, 7:17 AM CST	Special Weather Statement	PAH	Christian, Muhlenberg, Todd, Trigg	43 min
Feb 7, 8:16 AM CST	Areal Flood Advisory	PAH	Calloway, Graves, Trigg	3 hr
Feb 7, 2:41 AM CST	Special Weather Statement	PAH	Carter	49 min
Feb 7, 3:44 AM CST	Special Weather Statement	PAH	Bollinger	31 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2017 Every severe thunderstorm warning in 2017

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.