Alert archive / Kentucky / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 21, NWS Wilmington, OH

February 6, 20084 counties in Kentucky

NWS Wilmington, OH issued this severe thunderstorm warning at Feb 6, 2008, 12:42 AM EST for 4 counties in Kentucky. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Feb 6, 2008, 12:42 AM EST (05:42 UTC)
Expired: Feb 6, 2008, 1:30 AM EST
In force: 48 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

Counties Carroll County, KY, Gallatin County, KY, Grant County, KY, Owen County, KY

The radar

The Louisville radar (KLVX), 107 km from the middle of the area, began a volume at 05:43 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 5, 8:08 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.7 hours before the alert went out and 141 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: 537 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 379 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KILN 060543
SVRILN
KYC041-077-081-187-060630-
/O.NEW.KILN.SV.W.0021.080206T0542Z-080206T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1242 AM EST WED FEB 6 2008

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CARROLL COUNTY IN NORTHERN KENTUCKY...
  GALLATIN COUNTY IN NORTHERN KENTUCKY...
  WESTERN GRANT COUNTY IN NORTHERN KENTUCKY...
  OWEN COUNTY IN NORTHERN KENTUCKY...

* UNTIL 130 AM EST.

* AT 1239 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WINDS TO 60 MPH.
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES WEST
  OF INTERSTATE 71 AT MILE MARKER 40 TO 34 MILES SOUTHWEST OF
  GRATZ...MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  OWENTON...

IN ADDITION...INTERSTATE 71 AT MILE MARKER 40...ENGLISH...INTERSTATE
71 AT STATE ROUTE 227...LANGSTAFF...EASTERDAY...WORTHVILLE...EAGLE
STATION AND INTERSTATE 71 AT MILE MARKER 52 ARE NEAR THE PATH OF
THESE SEVERE THUNDERSTORMS.

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3880 8480 3841 8465 3834 8474 3833 8483
      3837 8491 3841 8491 3843 8498 3857 8505
      3859 8510 3858 8521 3862 8523
TIME...MOT...LOC 0542Z 269DEG 41KT 3860 8527 3808 8529

$$

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 6, 12:28 AM EST	Severe Thunderstorm Warning	ILN	Carroll, Gallatin	47 min
Feb 6, 1:03 AM EST	Severe Thunderstorm Warning	ILN	Boone, Campbell, Gallatin, Grant, Kenton, Owen and 1 more	42 min
Feb 6, 1:33 AM EST	Areal Flood Advisory	ILN	Campbell	4 hr
Feb 6, 1:35 AM EST	Areal Flood Advisory	ILN	Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 4 more	4 hr
Feb 6, 1:35 AM EST	Severe Thunderstorm Warning	ILN	Bracken, Lewis, Mason, Pendleton, Robertson	40 min
Feb 6, 2:11 AM EST	Areal Flood Advisory	ILN	Bracken, Lewis, Mason	4 hr
Feb 6, 2:16 AM EST	Severe Thunderstorm Warning	ILN	Lewis	44 min
Feb 6, 2:37 PM EST	Areal Flood Warning	ILN	Lewis	4 hr
Feb 6, 2:46 PM EST	Areal Flood Advisory	ILN	Bracken, Mason, Robertson	3 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2008 Every severe thunderstorm warning in 2008

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.