Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Louisville, KY

May 20, 2017Perry County, Indiana

NWS Louisville, KY issued this special weather statement at May 20, 2017, 2:17 AM CDT for Perry County, Indiana. It was in force for 28 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
May 20, 2017, 2:17 AM CDT (07:17 UTC)
Expired
May 20, 2017, 2:45 AM CDT
In force
28 min
Issued by
NWS Louisville, KY

County Perry County, IN

The radar

The Louisville radar (KLVX), 58 km from the middle of the area, began a volume at 07:20 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 00:00Z, 7.3 hours before the alert went out and 294 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 00:00Z on 2017-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 00:00Z on 2017-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1029 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 20, 12:05 AM CDT, 2 hours 12 minutes earlier.

Area forecast discussion, May 20, 12:05 AM CDT, 2 hours 12 minutes before
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Hazardous weather outlook, May 19, 7:47 PM CDT, 6 hours 30 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
847 PM EDT Fri May 19 2017

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-210100-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-
Oldham-Trimble-Henry-Shelby-Franklin-Spencer-Anderson-Woodford-
Fayette-Bourbon-Nicholas-Nelson-Mercer-Jessamine-Larue-Marion-Boyle-
Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell-
Cumberland-Clinton-
Including the cities of Paoli, Salem, Scottsburg, Madison, Jasper,
English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport,
Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield,
Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford,
Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana,
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle,
Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester,
Hodgenville, Lebanon, Danville, Lancaster, Richmond, Morgantown,
Brownsville, Horse Cave, Greensburg, Campbellsville, Liberty,
Stanford, Russellville, Bowling Green, Franklin, Providence,
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown,
Burkesville, and Albany
847 PM EDT Fri May 19 2017 /747 PM CDT Fri May 19 2017/

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Tonight.

Scattered thunderstorms are possible mainly before Midnight, and
again in the pre-dawn hours mainly across southern Indiana and north
central Kentucky. Any storm will be capable of brief heavy rainfall
and lightning. Ongoing localized flood problems could be agitated
with additional rainfall.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Scattered to numerous storms are again possible late Saturday into
Saturday night as a cold front approaches. Any severe storm could
produce heavy rainfall, damaging winds, and large hail late Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to continue reporting any damaging winds,
flooding, or hail through Saturday.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

BJS

In the hours before

Special weather statement, May 19, 8:50 PM CDT, 5 hours 27 minutes before
Special Weather Statement
National Weather Service Louisville KY
950 PM EDT FRI MAY 19 2017

KYZ056-057-200215-
Madison-Garrard-
950 PM EDT FRI MAY 19 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN GARRARD AND
SOUTHEASTERN MADISON COUNTIES...

At 950 PM EDT, a strong thunderstorm was located near Snider, moving
east at 30 mph.

Winds in excess of 40 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Berea, Duluth, Bighill, Wallaceton, Dreyfus, Cartersville and Slate
Lick.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3756 8416 3752 8420 3752 8430 3754 8430
      3753 8432 3754 8432 3754 8435 3752 8436
      3750 8435 3747 8437 3749 8445 3761 8440
      3762 8412 3757 8409
TIME...MOT...LOC 0150Z 283DEG 26KT 3752 8438

SCHOETTMER
Local storm report, May 19, 11:39 PM CDT, 2 hours 38 minutes before
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Special weather statement, May 20, 2:17 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 8:50 PM CDTSpecial Weather StatementLMKMadison25 min
May 19, 10:39 PM CDTRiver Flood WarningLMKWarren17 hr
May 20, 3:03 AM CDTSpecial Weather StatementLMKMeade27 min
May 20, 3:39 AM CDTSpecial Weather StatementLMKBullitt36 min
May 20, 3:13 PM CDTSpecial Weather StatementLMKOhio32 min
May 20, 3:24 PM CDTSevere Thunderstorm WarningLMKHancock36 min
May 20, 3:35 PM CDTSevere Thunderstorm WarningLMKLogan40 min
May 20, 4:06 PM CDTSevere Thunderstorm WarningLMKButler, Logan, Warren39 min
May 20, 4:20 PM CDTSpecial Weather StatementLMKSimpson25 min
May 20, 4:21 PM CDTSpecial Weather StatementLMKBreckinridge24 min
May 20, 4:31 PM CDTSpecial Weather StatementLMKMeade29 min
May 20, 4:44 PM CDTSevere Thunderstorm WarningLMKButler, Edmonson, Grayson31 min
May 20, 4:52 PM CDTSevere Thunderstorm WarningLMKAllen, Barren, Simpson, Warren38 min
May 20, 4:53 PM CDTSpecial Weather StatementLMKBreckinridge, Meade37 min
May 20, 4:58 PM CDTSpecial Weather StatementLMKHarrison32 min
May 20, 5:27 PM CDTSpecial Weather StatementLMKBullitt, Jefferson, Nelson48 min
May 20, 5:34 PM CDTSpecial Weather StatementLMKLarue26 min
May 20, 6:00 PM CDTSevere Thunderstorm WarningLMKJefferson30 min
May 20, 6:05 PM CDTSevere Thunderstorm WarningLMKTrimble25 min
May 20, 6:29 PM CDTSpecial Weather StatementLMKAnderson, Franklin, Henry, Shelby, Spencer46 min
May 20, 6:31 PM CDTSevere Thunderstorm WarningLMKAnderson, Franklin, Shelby, Spencer44 min
May 19, 8:57 PM CDTRiver Flood WarningLMKHarrison, Washington25 hr
May 19, 10:02 PM CDTAreal Flood WarningLMKWashington12 hr
May 20, 8:33 AM CDTSpecial Weather StatementLMKDubois27 min
May 20, 1:54 PM CDTSpecial Weather StatementLMKDubois36 min
May 20, 2:53 PM CDTSpecial Weather StatementLMKPerry37 min
May 20, 3:16 PM CDTSpecial Weather StatementLMKCrawford29 min
May 20, 3:32 PM CDTSpecial Weather StatementLMKPerry28 min
May 20, 3:43 PM CDTTornado WarningLMKCrawford, Perry17 min
May 20, 3:58 PM CDTSevere Thunderstorm WarningLMKCrawford, Harrison32 min
May 20, 4:11 PM CDTSevere Thunderstorm WarningLMKCrawford, Harrison22 min
May 20, 4:24 PM CDTSpecial Weather StatementLMKHarrison36 min
May 20, 4:28 PM CDTSevere Thunderstorm WarningLMKCrawford, Floyd, Harrison, Washington32 min
May 20, 5:01 PM CDTSpecial Weather StatementLMKClark, Floyd29 min
May 20, 5:08 PM CDTSevere Thunderstorm WarningLMKClark, Floyd37 min
May 20, 5:16 PM CDTSpecial Weather StatementLMKScott29 min
May 20, 5:33 PM CDTSevere Thunderstorm WarningLMKClark16 min
May 20, 5:55 PM CDTSpecial Weather StatementLMKJefferson35 min
May 20, 6:09 PM CDTTornado WarningLMKJefferson21 min

Nearby

Special Weather Statements in Indiana, 2017Every special weather statement in 2017

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.