Alert archive / Kentucky / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 230, NWS Louisville, KY

June 30, 2015Clinton County, Cumberland County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jun 30, 2015, 12:40 PM CDT for Clinton County, Cumberland County, Kentucky. It was in force for 30 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: Jun 30, 2015, 12:40 PM CDT (17:40 UTC)
Expired: Jun 30, 2015, 1:10 PM CDT
In force: 30 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Clinton County, KY, Cumberland County, KY

The radar

The Nashville radar (KOHX), 129 km from the middle of the area, began a volume at 17:43 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, 5.7 hours before the alert went out and 139 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: 1010 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1021 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

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 Jun 30, 12:20 PM CDT, 20 minutes earlier.

Area forecast discussion, Jun 30, 12:20 PM CDT, 20 minutes before

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Hazardous weather outlook, Jun 30, 2:39 AM CDT, 10 hours 1 minute before

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In the hours before

Local storm report, Jun 30, 10:29 AM CDT, 2 hours 11 minutes before

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Special weather statement, Jun 30, 11:01 AM CDT, 1 hour 39 minutes before

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Special weather statement, Jun 30, 11:28 AM CDT, 1 hour 12 minutes before

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Special weather statement, Jun 30, 12:18 PM CDT, 22 minutes before

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Special weather statement, Jun 30, 12:28 PM CDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1228 PM CDT TUE JUN 30 2015

KYZ081-082-301800-
CLINTON KY-CUMBERLAND KY-
1228 PM CDT TUE JUN 30 2015

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND 40
MPH WINDS...

AT 1225 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR BURKESVILLE...AND MOVING EAST AT 20 MPH.

OCCASIONAL LIGHTNING...HEAVY RAIN REDUCING VISIBILITIES...AND GUSTY
WINDS OF AROUND 35 TO 40 MPH...ARE EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  BURKESVILLE...
  ALBANY...
  BOW...
  FROGUE AND MODOC...
  GREEN GROVE AND HEGIRA...
  HIGHWAY AND SHIPLEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS OCCURRING. EXPECT PONDING OF WATER ON LOCAL
ROADWAYS. DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF
ENCOUNTERING HEAVY RAINS.

&&

LAT...LON 3662 8544 3664 8546 3683 8537 3679 8501
      3674 8500 3670 8502 3668 8500 3661 8500
      3662 8530 3661 8540
TIME...MOT...LOC 1728Z 260DEG 16KT 3673 8538

JDG

Special weather statement, Jun 30, 12:32 PM CDT, 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
132 PM EDT TUE JUN 30 2015

INZ079-301800-
JEFFERSON IN-
132 PM EDT TUE JUN 30 2015

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND 40
MPH WINDS...

AT 130 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES SOUTH OF HODGENVILLE MOVING SOUTHEAST AT
30 MPH.

OCCASIONAL LIGHTNING...HEAVY RAIN REDUCING VISIBILITIES...AND GUSTY
WINDS OF AROUND 35 TO 40 MPH...ARE EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...

  MAINLY RURAL AREAS OF NORTHERN JEFFERSON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE AWARE THAT A GUST FRONT PRECEDING THIS STORM WILL GENERATE STRONG
AND GUSTY WINDS WELL BEFORE THE ARRIVAL OF ANY RAIN.

&&

LAT...LON 3891 8520 3869 8519 3869 8521 3874 8526
      3873 8536 3887 8558 3888 8558 3889 8557
      3889 8554 3892 8554 3892 8521
TIME...MOT...LOC 1731Z 180DEG 0KT 3744 8571

JDG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 11:01 AM CDT	Special Weather Statement	LMK	Metcalfe	29 min
Jun 30, 11:28 AM CDT	Special Weather Statement	LMK	Cumberland	27 min
Jun 30, 11:42 AM CDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland, Metcalfe, Monroe, Russell	48 min
Jun 30, 12:18 PM CDT	Special Weather Statement	LMK	Casey	32 min
Jun 30, 12:28 PM CDT	Special Weather Statement	LMK	Clinton, Cumberland	32 min
Jun 30, 2:25 PM CDT	Special Weather Statement	LMK	Cumberland, Metcalfe	30 min
Jun 30, 4:40 PM CDT	Special Weather Statement	LMK	Henry, Trimble	30 min
Jun 30, 4:41 PM CDT	Areal Flood Advisory	LMK	Bourbon, Harrison, Henry, Nicholas, Scott, Trimble	3 hr
Jun 30, 5:16 PM CDT	Special Weather Statement	LMK	Henry	29 min
Jun 30, 5:39 PM CDT	Areal Flood Advisory	LMK	Oldham	2 hr
Jun 30, 6:42 PM CDT	Special Weather Statement	LMK	Woodford	28 min
Jun 30, 6:50 PM CDT	Special Weather Statement	LMK	Shelby	30 min
Jun 30, 12:32 PM CDT	Special Weather Statement	LMK	Jefferson	28 min
Jun 30, 1:19 PM CDT	Special Weather Statement	LMK	Jefferson	31 min
Jun 30, 3:34 PM CDT	Areal Flood Advisory	LMK	Jefferson	3 hr
Jun 30, 3:36 PM CDT	Special Weather Statement	LMK	Jefferson	44 min
Jun 30, 4:01 PM CDT	Special Weather Statement	LMK	Scott	29 min
Jun 30, 4:09 PM CDT	Flash Flood Warning	LMK	Jefferson	3 hr
Jun 30, 4:09 PM CDT	Severe Thunderstorm Warning	LMK	Scott	31 min
Jun 30, 5:44 PM CDT	Special Weather Statement	LMK	Scott	31 min
Jun 30, 5:57 PM CDT	Severe Thunderstorm Warning	LMK	Clark	28 min
Jun 30, 6:38 PM CDT	Special Weather Statement	LMK	Clark	32 min
Jun 30, 6:45 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Washington	30 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2015 Every severe thunderstorm warning in 2015

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.