Alert archive / Kentucky / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 103, NWS Jackson, KY

July 9, 20154 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 9, 2015, 3:57 PM EDT 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 counties it named.

The facts

Issued
Jul 9, 2015, 3:57 PM EDT (19:57 UTC)
Expired
Jul 9, 2015, 4:45 PM EDT
In force
48 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Floyd County, KY, Johnson County, KY, Martin County, KY, Pike County, KY

The radar

The Jackson,KY radar (KJKL), 62 km from the middle of the area, began a volume at 19:59 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, 8.0 hours before the alert went out and 221 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2015-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 318 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2015-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 197 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
318 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
197 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.3

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 Jackson, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 2:51 PM EDT, 1 hour 6 minutes earlier.

Area forecast discussion, Jul 9, 2:51 PM EDT, 1 hour 6 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON KY
251 PM EDT THU JUL 9 2015

.SHORT TERM...(THIS EVENING THROUGH FRIDAY NIGHT)
ISSUED AT 250 PM EDT THU JUL 9 2015

SIGNIFICANT WIND DAMAGE OCCURRING WITH BOWING SEGMENTS OF STORM
COMPLEX CURRENTLY IN THE WEST CENTRAL PART OF THE FORECAST AREA.
SEVERE THREAT WILL CONTINUE THROUGH THE REMAINDER OF THE
AFTERNOON AS WEAK SURFACE COLD FRONT CONTINUES TO SAG SOUTHEAST
ACROSS KY. THE SEVERE THREAT WILL COME TO AN END WITH THE LOSS OF
DAYTIME HEATING...AND THE LATEST SHORT RANGE GUIDANCE...INCLUDING
THE HRRR SUPPORTS A QUIET NIGHT AHEAD. THE FRONT WILL STALL
ACROSS THE AREA LATER TONIGHT...AND YET ANOTHER SHORT WAVE TROUGH
WILL MOVE EAST FROM THE CENTRAL PLAINS LATE TONIGHT AND FRIDAY
MORNING. THIS WILL BRING ANOTHER GOOD CHANCE OF THUNDERSTORMS
FOR FRIDAY.

.LONG TERM...(SATURDAY THROUGH THURSDAY)
ISSUED AT 250 PM EDT THU JUL 9 2015

FLAT UPPER LEVEL RIDGING CURRENTLY ACROSS THE SOUTHEAST UNITED
STATES WILL BUILD WEST INTO THE SOUTHERN PLAINS THIS WEEKEND AND
THEN NORTH ACROSS THE PLAINS EARLY NEXT WEEK. WE WILL REMAIN ON
THE NORTHWEST PERIPHERY OF THE RIDGE AS WE MOVE INTO NEXT WEEK
WITH PERIODIC SHORT WAVES MOVING SOUTHEAST IN NORTHWEST FLOW.
WHILE THE SPECIFIC TIMING OF THESE WAVES IS UNCERTAIN AT THIS
TIME...THE BOTTOM LINE IS THAT THIS PATTERN WILL RESULT IN A
CONTINUED THREAT FOR THUNDERSTORMS EVERY DAY. WITH THE THREAT FOR
MCS DEVELOPMENT TO OUR NORTHWEST IN THIS TYPE OF PATTERN THE
STORMS WILL NOT NECESSARILY BE TIED TO THE DIURNAL HEATING CYCLE.
TEMPERATURES WILL REMAIN NEARLY UNCHANGED THROUGH THE PERIOD WITH
HIGHS MOSTLY IN THE MIDDLE AND UPPER 80S AND LOWS IN THE UPPER 60S
AND LOWER 70S.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z FRIDAY AFTERNOON)
ISSUED AT 149 PM EDT THU JUL 9 2015

A SLOW MOVING COLD FRONT CONTINUES TO SAG SOUTH ACROSS THE OH
VALLEY. SCATTERED STRONG TO SEVERE STORMS ARE OCCURRING AHEAD OF
THIS BOUNDARY ACROSS EASTERN KY. THE SEVERE STORMS MOVING OUT OF
SOUTH CENTRAL KY SHOULD REMAIN JUST NORTH OF SME AND LOZ...WHILE
STORMS AFFECTING SJS WILL BE ENDING SHORTLY. GREATEST THREAT FOR
THUNDERSTORMS WILL REMAIN ACROSS THE CENTRAL PART OF THE FORECAST
AREA THIS AFTERNOON. THE THUNDERSTORM THREAT WILL DIMINISH AFTER
SUNSET...BUT FOG AND LOW CLOUDS ARE EXPECTED TO DEVELOP TONIGHT
RESULTING IN IFR CONDITIONS ACROSS MOST OF THE AREA. CONDITIONS
WILL GRADUALLY IMPROVE ON FRIDAY...BUT MVFR CEILINGS ARE EXPECTED
TO PREVAIL DURING THE MORNING EVEN AFTER VISIBILITY IMPROVES TO 7
OR GREATER MILES. VFR CONDITIONS SHOULD RETURN DURING THE
AFTERNOON ON FRIDAY.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...SBH
LONG TERM...SBH
AVIATION...SBH
Hazardous weather outlook, Jul 9, 3:49 PM EDT, 8 minutes before
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In the hours before

Local storm report, Jul 9, 3:13 PM EDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
313 PM EDT THU JUL 09 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 PM     TSTM WND DMG     SANDHILL                37.73N 84.02W
07/09/2015                   ESTILL             KY   EMERGENCY MNGR

            TREE DOWN ON POWER LINE IN THE 2400 SECTION OF SANDHILL.

&&

TBREWER
Local storm report, Jul 9, 3:30 PM EDT, 27 minutes before
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Local storm report, Jul 9, 3:37 PM EDT, 20 minutes before
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Local storm report, Jul 9, 3:41 PM EDT, 16 minutes before
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Local storm report, Jul 9, 3:52 PM EDT, 5 minutes before
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Local storm report, Jul 9, 3:57 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 11:39 AM EDTSpecial Weather StatementJKLJackson, Rockcastle51 min
Jul 9, 12:09 PM EDTSpecial Weather StatementJKLOwsley36 min
Jul 9, 12:23 PM EDTSpecial Weather StatementJKLJohnson, Magoffin37 min
Jul 9, 12:37 PM EDTSevere Thunderstorm WarningJKLBreathitt, Magoffin23 min
Jul 9, 12:56 PM EDTSpecial Weather StatementJKLFloyd, Johnson, Magoffin, Martin34 min
Jul 9, 1:09 PM EDTSevere Thunderstorm WarningJKLFloyd, Magoffin36 min
Jul 9, 1:25 PM EDTSevere Thunderstorm WarningJKLMartin20 min
Jul 9, 1:41 PM EDTSevere Thunderstorm WarningJKLPulaski, Rockcastle49 min
Jul 9, 2:08 PM EDTSevere Thunderstorm WarningJKLJackson, Laurel, Pulaski, Rockcastle37 min
Jul 9, 2:24 PM EDTSevere Thunderstorm WarningJKLEstill, Jackson36 min
Jul 9, 2:31 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Lee, Owsley29 min
Jul 9, 2:47 PM EDTSevere Thunderstorm WarningJKLEstill, Lee, Powell, Wolfe28 min
Jul 9, 2:53 PM EDTSevere Thunderstorm WarningJKLBreathitt, Lee, Owsley, Perry37 min
Jul 9, 3:06 PM EDTSevere Thunderstorm WarningJKLBreathitt, Lee, Magoffin, Menifee, Morgan, Wolfe39 min
Jul 9, 3:23 PM EDTSevere Thunderstorm WarningJKLBreathitt, Floyd, Knott, Magoffin, Perry37 min
Jul 9, 3:41 PM EDTSevere Thunderstorm WarningJKLJohnson, Magoffin, Morgan34 min
Jul 9, 5:10 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Pulaski, Rockcastle50 min
Jul 9, 5:59 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Pulaski, Rockcastle31 min
Jul 9, 6:24 PM EDTSpecial Weather StatementJKLJackson36 min
Jul 9, 6:29 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Leslie, Owsley, Perry31 min
Jul 9, 6:57 PM EDTSpecial Weather StatementJKLClay33 min
Jul 9, 7:06 PM EDTSpecial Weather StatementJKLOwsley24 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2015Every 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.