Alert archive / Kentucky / Special Weather Statements in 2012

Special Weather Statement, NWS Louisville, KY

March 30, 2012Trimble County, Kentucky

NWS Louisville, KY issued this special weather statement at Mar 30, 2012, 10:41 PM EDT for Trimble 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 outline as issued.

The facts

Issued
Mar 30, 2012, 10:41 PM EDT (02:41 UTC)
Expired
Mar 30, 2012, 11:15 PM EDT
In force
34 min
Issued by
NWS Louisville, KY

County Trimble County, KY

The radar

The Louisville radar (KLVX), 82 km from the middle of the area, began a volume at 02:43 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.7 hours before the alert went out and 166 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 2012-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 381 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 2012-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
381 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1859 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

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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 Mar 30, 10:13 PM EDT, 28 minutes earlier.

Area forecast discussion, Mar 30, 10:13 PM EDT, 28 minutes before
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Hazardous weather outlook, Mar 30, 9:39 PM EDT, 1 hour 2 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTION FOR TIMING IN DAY ONE
NATIONAL WEATHER SERVICE LOUISVILLE KY
939 PM EDT FRI MAR 30 2012

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-010130-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-BUTLER KY-EDMONSON KY-HART KY-GREEN KY-
TAYLOR KY-CASEY KY-LINCOLN KY-LOGAN KY-WARREN KY-SIMPSON KY-
ALLEN KY-BARREN KY-MONROE KY-METCALFE KY-ADAIR KY-RUSSELL KY-
CUMBERLAND KY-CLINTON KY-
939 PM EDT FRI MAR 30 2012 /839 PM CDT FRI MAR 30 2012/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...TONIGHT.

A LINE OF STORMS AHEAD OF A COLD FRONT WILL CONTINUE TO SAG SOUTH
INTO SOUTHERN INDIANA AND KENTUCKY TONIGHT. AS IT DOES...STRONG TO
SEVERE STORMS WILL LIKELY IMPACT SOUTHERN INDIANA AND EXTREME
NORTHERN KENTUCKY MAINLY BEFORE 1 AM EDT. THE MAIN THREATS FROM
THESE STORMS WILL BE LARGE HAIL...STRONG WINDS...AND CLOUD TO GROUND
LIGHTNING. THE LINE OF STORMS IS EXPECTED TO WEAKEN AS IT MOVES
SOUTH THROUGH KENTUCKY LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

ISOLATED TO SCATTERED STORMS WILL RETURN TO THE FORECAST AREA EARLY
MONDAY THROUGH WEDNESDAY...AS ANOTHER STORM SYSTEM COMBINES WITH
OUR WARM AND MOIST AIR MASS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY HAIL OR STRONG WINDS TONIGHT.

MJ/BJS/AMS

In the hours before

Local storm report, Mar 30, 9:09 PM EDT, 1 hour 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
909 PM EDT FRI MAR 30 2012

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

0900 PM     HAIL             JASPER                  38.39N  86.94W
03/30/2012  E0.70 INCH       DUBOIS             IN   EMERGENCY MNGR

            PEA TO DIME SIZE.

&&

EVENT NUMBER LMK1200491

MRC
Special weather statement, Mar 30, 9:34 PM EDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
934 PM EDT FRI MAR 30 2012

INZ077-083-084-089>092-310215-
CLARK-CRAWFORD-DUBOIS-FLOYD-HARRISON-PERRY-WASHINGTON-
934 PM EDT FRI MAR 30 2012

...STRONG THUNDERSTORMS WITH DANGEROUS LIGHTNING...HEAVY RAIN...PENNY
SIZE HAIL...AND 40 MPH WINDS...

AT 932 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR PEKIN...TO
ENGLISH AND TO JASPER...AND MOVING SOUTHEAST AT 30 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN WITH RAINFALL RATES
OF AROUND ONE HALF INCH PER HOUR...UP TO PENNY SIZE HAIL...AND GUSTY
WINDS OF AROUND 40 MPH ARE EXPECTED WITH THESE STORMS.

* THESE STORMS WILL ALSO IMPACT...
  NEW ALBANY...
  JASPER...
  ENGLISH...
  CORYDON...
  NEW PEKIN AND SWITZER CROSSROADS...
  DAISY HILL AND CAREFREE...
  BORDEN AND CHESTNUT HILL...
  SIBERIA AND WHITE CLOUD...

THESE STORMS WILL AFFECT INTERSTATE 65 IN INDIANA BETWEEN MILE
MARKERS 16 AND 8...AND INTERSTATE 64 IN INDIANA BETWEEN MILE
MARKERS 105 AND 92.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE AWARE THAT A GUST FRONT PRECEDING THESE STORMS IS GENERATING AN
OMINOUS LOOKING SHELF CLOUD AND WILL GENERATE STRONG AND GUSTY WINDS
WELL BEFORE THE ARRIVAL OF ANY RAIN.

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER INDOORS AND
STAY AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR LATER
UPDATES AND POSSIBLE WARNINGS.

&&

LAT...LON 3843 8708 3842 8670 3840 8668 3839 8631
      3849 8631 3855 8624 3850 8556 3816 8595
      3813 8623 3813 8627 3820 8635 3820 8637
      3817 8638 3815 8632 3814 8632 3815 8671
TIME...MOT...LOC 0133Z 299DEG 25KT 3852 8608 3832 8631
          3828 8659 3836 8686

AL
Special weather statement, Mar 30, 9:39 PM EDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
939 PM EDT FRI MAR 30 2012

INZ077-090>092-310215-
CLARK-FLOYD-HARRISON-WASHINGTON-
939 PM EDT FRI MAR 30 2012

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...NICKEL
SIZE HAIL...AND 50 MPH WINDS...

AT 937 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES SOUTH OF SALEM OVER SOUTHERN WASHINGTON
COUNTY IN INDIANA...AND MOVING EAST AT 25 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN...NICKEL SIZE
HAIL...AND STRONG GUSTY WINDS OF AROUND 45 TO 50 MPH ARE EXPECTED
WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  PALMYRA...
  CENTRAL BARREN...
  BRADFORD AND MARTINSBURG...
  BYRNEVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS...AND AVOID USING THE
TELEPHONE UNLESS IT IS AN EMERGENCY.

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR LATER
UPDATES AND POSSIBLE WARNINGS.

&&

LAT...LON 3847 8588 3831 8602 3841 8623 3845 8621
      3850 8618
TIME...MOT...LOC 0139Z 291DEG 21KT 3842 8616

AL
Special weather statement, Mar 30, 9:45 PM EDT, 56 minutes before
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Local storm report, Mar 30, 9:55 PM EDT, 46 minutes before
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Special weather statement, Mar 30, 10:41 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1041 PM EDT FRI MAR 30 2012

INZ092-KYZ031>033-310315-
CLARK-HENRY-OLDHAM-TRIMBLE-
1041 PM EDT FRI MAR 30 2012

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...TORRENTIAL RAIN...
NICKEL SIZE HAIL...AND 40 MPH WINDS...

AT 1038 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 10 MILES NORTHWEST OF LA GRANGE...AND MOVING
EAST AT 35 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...TORRENTIAL RAINFALL...HAIL UP
TO THE SIZE OF NICKELS...AND GUSTY WINDS OF AROUND 35 TO 40 MPH ARE
EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  LA GRANGE...
  BEDFORD...
  OLDHAM AND BETHLEHEM...
  RUSSELL CORNER...
  SLIGO AND LIRO...
  SULPHUR AND PENDLETON...

THIS STORM WILL AFFECT INTERSTATE 71 IN KENTUCKY BETWEEN MILE MARKERS
22 AND 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS OCCURRING. EXPECT PONDING OF WATER ON LOCAL
ROADWAYS. DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF
ENCOUNTERING HEAVY RAINS.

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR LATER
UPDATES AND POSSIBLE WARNINGS.

&&

LAT...LON 3859 8521 3859 8512 3835 8523 3835 8527
      3846 8559 3861 8552 3861 8550 3859 8549
      3859 8543 3863 8543 3864 8524
TIME...MOT...LOC 0240Z 284DEG 30KT 3852 8548

AL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 12:43 AM EDTSpecial Weather StatementLMKOhio32 min
Mar 31, 4:25 AM EDTSpecial Weather StatementLMKBreckinridge35 min
Mar 31, 4:36 AM EDTSevere Thunderstorm WarningLMKBreckinridge24 min
Mar 30, 8:18 PM EDTSpecial Weather StatementLMKJefferson27 min
Mar 30, 8:35 PM EDTSpecial Weather StatementLMKOrange25 min
Mar 30, 8:56 PM EDTSpecial Weather StatementLMKDubois, Orange, Washington34 min
Mar 30, 9:13 PM EDTSevere Thunderstorm WarningLMKWashington32 min
Mar 30, 9:34 PM EDTSpecial Weather StatementLMKClark, Crawford, Dubois, Floyd, Harrison41 min
Mar 30, 9:39 PM EDTSpecial Weather StatementLMKFloyd36 min
Mar 30, 9:45 PM EDTSpecial Weather StatementLMKJefferson, Scott45 min

Nearby

Special Weather Statements in Kentucky, 2012Every special weather statement in 2012

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.