Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 328, NWS Louisville, KY

September 8, 2018Madison County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Sep 8, 2018, 2:25 PM EDT for Madison County, Kentucky. It was in force for 35 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: Sep 8, 2018, 2:25 PM EDT (18:25 UTC)
Expired: Sep 8, 2018, 3:00 PM EDT
In force: 35 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Madison County, KY

The radar

The Jackson,KY radar (KJKL), 86 km from the middle of the area, began a volume at 18:23 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.4 hours before the alert went out and 195 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: 3 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 462 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 359 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 8, 2:20 PM EDT, 5 minutes earlier.

Area forecast discussion, Sep 8, 2:20 PM EDT, 5 minutes before

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Hazardous weather outlook, Sep 8, 11:16 AM EDT, 3 hours 9 minutes before

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In the hours before

Local storm report, Sep 8, 9:16 AM EDT, 5 hours 9 minutes before

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Special weather statement, Sep 8, 2:18 PM EDT, 7 minutes before

Special Weather Statement
National Weather Service Louisville KY
218 PM EDT SAT SEP 8 2018

KYZ056-057-081845-
Madison-Garrard-
218 PM EDT SAT SEP 8 2018

...LINE OF STRONG THUNDERSTORMS IN THE BEREA AREA...

At 217 PM EDT, radar indicated strong thunderstorms from near
Richmond to 8 miles north of Rockford to near Boone. Movement was
east at 20 mph.

Wind gusts up to 50 mph are possible with these storms.

Locations impacted include...
Richmond, Berea, Silver Creek, Caleast, Duluth, Peytontown, Moberly,
Bighill, Panola, and Kingston.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle or walk through
flooded areas.

LAT...LON 3772 8410 3768 8410 3767 8409 3764 8413
      3757 8409 3756 8416 3752 8420 3752 8430
      3754 8430 3753 8432 3754 8435 3749 8436
      3750 8441 3775 8436 3779 8409 3778 8411
      3777 8408 3774 8408
TIME...MOT...LOC 1817Z 254DEG 15KT 3770 8430 3764 8431 3752 8436

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 11:00 PM EDT	Special Weather Statement	LMK	Meade	45 min
Sep 8, 1:03 AM EDT	Special Weather Statement	LMK	Edmonson	42 min
Sep 8, 2:13 AM EDT	Special Weather Statement	LMK	Green	47 min
Sep 8, 8:30 AM EDT	Areal Flood Advisory	LMK	Nicholas	2 hr
Sep 8, 2:01 PM EDT	Areal Flood Advisory	LMK	Boyle, Clark, Fayette, Garrard, Jessamine, Lincoln and 1 more	119 min
Sep 8, 2:18 PM EDT	Special Weather Statement	LMK	Madison	27 min
Sep 8, 3:34 PM EDT	Severe Thunderstorm Warning	LMK	Hancock	26 min
Sep 8, 4:09 PM EDT	Tornado Warning	LMK	Meade	36 min
Sep 8, 4:13 PM EDT	Areal Flood Advisory	LMK	Breckinridge, Hancock	2 hr
Sep 8, 4:20 PM EDT	Tornado Warning	LMK	Boyle, Casey, Lincoln	25 min
Sep 8, 4:45 PM EDT	Tornado Warning	LMK	Meade	30 min
Sep 8, 5:02 PM EDT	Special Weather Statement	LMK	Garrard, Lincoln	43 min
Sep 8, 5:23 PM EDT	Tornado Warning	LMK	Hancock	37 min
Sep 8, 5:54 PM EDT	Tornado Warning	LMK	Hancock	36 min
Sep 8, 6:32 PM EDT	Areal Flood Advisory	LMK	Meade	3 hr
Sep 8, 6:32 PM EDT	Special Weather Statement	LMK	Jefferson, Oldham	43 min
Sep 8, 6:45 PM EDT	Tornado Warning	LMK	Breckinridge, Meade	30 min
Sep 8, 7:08 PM EDT	Special Weather Statement	LMK	Shelby, Trimble	22 min
Sep 8, 7:34 PM EDT	Flash Flood Warning	LMK	Meade	116 min
Sep 8, 7:38 PM EDT	Special Weather Statement	LMK	Oldham	37 min
Sep 7, 8:04 PM EDT	Special Weather Statement	LMK	Orange	41 min
Sep 7, 8:35 PM EDT	Special Weather Statement	LMK	Perry	40 min
Sep 7, 9:15 PM EDT	Areal Flood Advisory	LMK	Perry	2 hr
Sep 7, 9:56 PM EDT	Special Weather Statement	LMK	Perry	34 min
Sep 7, 10:29 PM EDT	Special Weather Statement	LMK	Perry	46 min
Sep 8, 11:35 AM EDT	Areal Flood Advisory	LMK	Crawford, Dubois, Orange, Perry	6 hr
Sep 8, 3:30 PM EDT	Special Weather Statement	LMK	Perry	30 min
Sep 8, 3:40 PM EDT	Tornado Warning	LMK	Perry	35 min
Sep 8, 4:43 PM EDT	Flash Flood Warning	LMK	Perry	3 hr
Sep 8, 5:51 PM EDT	Flash Flood Warning	LMK	Crawford, Dubois, Perry	114 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 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.