Alert archive / Kentucky / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 87, NWS Charleston, WV

April 23, 20114 counties in Kentucky; Lawrence County, Ohio

NWS Charleston, WV issued this severe thunderstorm warning at Apr 23, 2011, 7:03 AM EDT for 4 counties in Kentucky; Lawrence County, Ohio. It was in force for 42 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 23, 2011, 7:03 AM EDT (11:03 UTC)
Expired: Apr 23, 2011, 7:45 AM EDT
In force: 42 min
Issued by: NWS Charleston, WV
Area: Storm-based polygon

Counties Boyd County, KY, Carter County, KY, Greenup County, KY, Lawrence County, KY, Lawrence County, OH

The radar

The Jackson,KY radar (KJKL), 88 km from the middle of the area, began a volume at 11:03 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.

What was reported inside it

Time	Report	Where	Remark
Apr 23, 7:25 AM EDT	TSTM WND DMG	Greenup, KY	LARGE BRANCHES BROKEN.
Apr 23, 7:45 AM EDT	TSTM WND DMG	2 W Warnock, KY	A FEW TREES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 11.1 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

834 
WUUS51 KRLX 231103
SVRRLX
KYC019-043-089-127-OHC087-231145-
/O.NEW.KRLX.SV.W.0087.110423T1103Z-110423T1145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
703 AM EDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOYD COUNTY IN KENTUCKY...
  THIS INCLUDES THE CITY OF CANNONSBURG...
  CARTER COUNTY IN KENTUCKY...
  THIS INCLUDES THE CITIES OF...OLIVE HILL...GRAYSON LAKE STATE
  PARK...GRAYSON...CARTER CAVES STATE PARK...
  GREENUP COUNTY IN KENTUCKY...
  WESTERN LAWRENCE COUNTY IN KENTUCKY...
  THIS INCLUDES THE CITY OF BLAINE...
  WEST CENTRAL LAWRENCE COUNTY IN SOUTHEAST OHIO...

* UNTIL 745 AM EDT

* AT 659 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 14 MILES NORTHWEST OF GESLING
  TO 12 MILES WEST OF OLIVE HILL TO 26 MILES SOUTHWEST OF OLIVE
  HILL...OR ALONG A LINE EXTENDING FROM 15 MILES NORTHWEST OF CARTER
  CAVES STATE PARK TO 11 MILES NORTH OF MOREHEAD TO 11 MILES SOUTH OF
  MOREHEAD...AND MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LETITIA...LOAD...GREENBO LAKE...OLDTOWN...GREENUP...DENTON...
  NAPLES...WEBBVILLE...COALTON...MARTHA...RUSH...PRINCESS AND GARNER.

THIS WILL IMPACT THE FOLLOWING INTERSTATE...I-64 BETWEEN MILE MARKERS
150 AND 185 IN KENTUCKY.

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 3834 8324 3843 8324 3856 8310 3868 8303
      3868 8287 3858 8282 3860 8275 3869 8276
      3866 8268 3792 8273 3800 8294 3797 8301
      3802 8302 3811 8290 3817 8292 3826 8317
      3819 8327 3832 8334
TIME...MOT...LOC 1102Z 270DEG 44KT 3855 8324 3835 8334
          3804 8346

$$

05

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 9:29 PM EDT	Areal Flood Warning	RLX	Greenup	3 hr
Apr 23, 3:16 AM EDT	Special Weather Statement	RLX	Boyd, Carter, Greenup	119 min
Apr 23, 6:19 AM EDT	Flash Flood Warning	RLX	Greenup	3 hr
Apr 23, 6:46 AM EDT	Special Weather Statement	RLX	Boyd, Carter, Lawrence	89 min
Apr 23, 7:35 AM EDT	Special Weather Statement	RLX	Boyd	55 min
Apr 23, 12:13 PM EDT	Areal Flood Warning	RLX	Greenup	6 hr
Apr 23, 4:27 PM EDT	Severe Thunderstorm Warning	RLX	Greenup	48 min
Apr 23, 4:42 PM EDT	Severe Thunderstorm Warning	RLX	Boyd, Carter, Greenup, Lawrence	48 min
Apr 23, 5:12 PM EDT	Severe Thunderstorm Warning	RLX	Greenup	63 min
Apr 23, 5:21 PM EDT	Severe Thunderstorm Warning	RLX	Boyd, Carter, Lawrence	54 min
Apr 23, 4:53 PM EDT	Special Weather Statement	RLX	Jackson, Meigs	37 min
Apr 23, 5:34 PM EDT	Tornado Warning	RLX	Gallia, Lawrence	26 min
Apr 23, 6:08 PM EDT	Areal Flood Warning	RLX	Gallia, Jackson, Lawrence	6 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2011 Severe Thunderstorm Warnings in Ohio, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.