Alert archive / Kentucky / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 84, NWS Jackson, KY

May 31, 2008Whitley County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at May 31, 2008, 6:26 PM EDT for Whitley County, Kentucky. It was in force for 34 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: May 31, 2008, 6:26 PM EDT (22:26 UTC)
Expired: May 31, 2008, 7:00 PM EDT
In force: 34 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon

County Whitley County, KY

The radar

The Knoxville radar (KMRX), 93 km from the middle of the area, began a volume at 22:28 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, 10.4 hours before the alert went out and 230 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: 673 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.6

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 Jackson, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at May 31, 3:06 PM EDT, 3 hours 20 minutes earlier.

Area forecast discussion, May 31, 3:06 PM EDT, 3 hours 20 minutes before

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Hazardous weather outlook, May 31, 3:30 PM EDT, 2 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON KY
330 PM EDT SAT MAY 31 2008

KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120-011100-
FLEMING-MONTGOMERY-BATH-ROWAN-ESTILL-POWELL-MENIFEE-ROCKCASTLE-
JACKSON-PULASKI-LAUREL-WAYNE-MCCREARY-WHITLEY-KNOX-BELL-HARLAN-
ELLIOTT-MORGAN-JOHNSON-WOLFE-MAGOFFIN-FLOYD-LEE-BREATHITT-KNOTT-
OWSLEY-PERRY-CLAY-LESLIE-LETCHER-MARTIN-PIKE-
330 PM EDT SAT MAY 31 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN KENTUCKY.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL BE POSSIBLE THROUGH EARLY THIS EVENING AND THEN
ONCE AGAIN AFTER MIDNIGHT. A FEW OF THESE MAY APPROACH SEVERE
LIMITS. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREATS.
ADDITIONALLY...ANY THUNDERSTORM WILL CONTAIN LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS ARE POSSIBLE SUNDAY INTO SUNDAY EVENING...ESPECIALLY
ACROSS THE CUMBERLAND VALLEY REGION OF SOUTHEAST KENTUCKY. A FEW OF
THESE MAY APPROACH SEVERE LIMITS. LARGE HAIL AND DAMAGING WINDS WILL
BE THE MAIN THREATS. ADDITIONALLY...ANY THUNDERSTORM WILL CONTAIN
LOCALLY HEAVY RAINFALL. THUNDERSTORMS ARE AGAIN POSSIBLE MONDAY NIGHT
THROUGH WEDNESDAY NIGHT ACROSS THE ENTIRE OUTLOOK AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY INSTANCES OF HAIL...DAMAGING
WINDS...OR RAINFALL AMOUNTS IN EXCESS OF ONE INCH TO THE NATIONAL
WEATHER SERVICE IN JACKSON TONIGHT AND SUNDAY.

ABE/GEOGERIAN

In the hours before

Special weather statement, May 31, 6:09 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
609 PM EDT SAT MAY 31 2008

KYZ083-312245-
WAYNE-
609 PM EDT SAT MAY 31 2008

...A STRONG THUNDERSTORM TO AFFECT CENTRAL WAYNE COUNTY THROUGH 645
PM EDT SATURDAY EVENING...

AT 609 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR CABELL...
MOVING EAST AT 39 MPH.

THIS STORM WILL BE NEAR MONTICELLO AROUND 620 PM EDT...OIL VALLEY
AROUND 625 PM EDT...GREGORY AROUND 630 PM EDT...DENNEY AROUND 635 PM
EDT.

RESIDENTS SHOULD EXPECT HEAVY RAIN...WITH RAINFALL RATES OF UP TO ONE
INCH PER HOUR...GUSTY WINDS OF 30 TO 40 MPH...FREQUENT LIGHTNING AND
SMALL HAIL IN THESE AREAS.

DANGEROUS CLOUD TO GROUND LIGHTNING IS ASSOCIATED WITH THIS
THUNDERSTORM. TAKE SHELTER IMMEDIATELY. REMEMBER...IF YOU CAN HEAR
THUNDER THEN LIGHTNING IS CLOSE ENOUGH TO BE A HAZARD.

RAY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 7:42 PM EDT	Severe Thunderstorm Warning	JKL	McCreary	22 min

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.