Alert archive / Indiana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Louisville, KY

April 7, 2015Crawford County, Floyd County, Harrison County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Apr 7, 2015, 4:56 PM EDT for Crawford County, Floyd County, Harrison County, Indiana. It was in force for 29 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: Apr 7, 2015, 4:56 PM EDT (20:56 UTC)
Expired: Apr 7, 2015, 5:25 PM EDT
In force: 29 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Crawford County, IN, Floyd County, IN, Harrison County, IN

The radar

The Louisville radar (KLVX), 41 km from the middle of the area, began a volume at 20:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 7, 2:37 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 hours before the alert went out and 240 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: 593 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

912 
WUUS53 KLMK 072056
SVRLMK
INC025-043-061-072125-
/O.NEW.KLMK.SV.W.0021.150407T2056Z-150407T2125Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
456 PM EDT TUE APR 7 2015

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CRAWFORD COUNTY IN SOUTH CENTRAL INDIANA...
  FLOYD COUNTY IN SOUTH CENTRAL INDIANA...
  NORTHERN HARRISON COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 525 PM EDT

* AT 454 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 9 MILES EAST OF ENGLISH TO CORYDON TO 5 MILES
  SOUTHWEST OF CORYDON...AND MOVING EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  CORYDON...FRENCHTOWN...DEPAUW...HANCOCK CHAPEL...FAIRDALE...
  RAMSEY...NEW MIDDLETOWN...BRECKENRIDGE...NEW SALISBURY...CENTRAL
  BARREN...PALMYRA...CRANDALL...LANESVILLE...BRADFORD...LOTTICK
  CORNER...BYRNEVILLE...BRIDGEPORT...GEORGETOWN...GREENVILLE AND
  EDWARDSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND
SIGNIFICANT PROPERTY DAMAGE.

&&

LAT...LON 3840 8581 3815 8591 3813 8627 3817 8630
      3816 8633 3817 8632 3820 8635 3820 8637
      3818 8638 3819 8641 3840 8646 3839 8631
      3842 8631 3843 8624
TIME...MOT...LOC 2056Z 263DEG 40KT 3834 8627 3823 8617
          3815 8615

HAIL...1.00IN
WIND...60MPH

$$

RAS

1 follow-up statement

462 
WWUS53 KLMK 072116
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
516 PM EDT TUE APR 7 2015

INC025-072125-
/O.CAN.KLMK.SV.W.0021.000000T0000Z-150407T2125Z/
CRAWFORD IN-
516 PM EDT TUE APR 7 2015

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CRAWFORD COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3840 8581 3815 8591 3813 8627 3816 8628
      3818 8632 3822 8628 3828 8628 3829 8625
      3830 8626 3832 8629 3836 8627 3835 8625
      3837 8626 3842 8625
TIME...MOT...LOC 2115Z 258DEG 36KT 3823 8611

$$

INC043-061-072125-
/O.CON.KLMK.SV.W.0021.000000T0000Z-150407T2125Z/
HARRISON IN-FLOYD IN-
516 PM EDT TUE APR 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR FLOYD AND
NORTHERN HARRISON COUNTIES UNTIL 525 PM EDT...

AT 513 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CORYDON...AND
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
RAMSEY...HANCOCK CHAPEL...FAIRDALE...DEPAUW...FRENCHTOWN...MOBERLY
AND WHITE CLOUD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND
SIGNIFICANT PROPERTY DAMAGE.

&&

LAT...LON 3840 8581 3815 8591 3813 8627 3816 8628
      3818 8632 3822 8628 3828 8628 3829 8625
      3830 8626 3832 8629 3836 8627 3835 8625
      3837 8626 3842 8625
TIME...MOT...LOC 2115Z 258DEG 36KT 3823 8611

HAIL...1.00IN
WIND...60MPH

$$

RAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:51 AM EDT	Special Weather Statement	LMK	Orange, Washington	39 min
Apr 7, 8:03 AM EDT	Areal Flood Advisory	LMK	Dubois, Orange	117 min
Apr 7, 8:33 AM EDT	Flash Flood Warning	LMK	Orange, Washington	117 min
Apr 7, 8:37 AM EDT	Special Weather Statement	LMK	Clark, Floyd, Orange	28 min
Apr 7, 9:17 AM EDT	Special Weather Statement	LMK	Crawford, Floyd	43 min
Apr 7, 10:10 AM EDT	Areal Flood Advisory	LMK	Clark, Floyd	2 hr
Apr 7, 10:26 AM EDT	Flash Flood Warning	LMK	Orange, Washington	109 min
Apr 7, 10:33 AM EDT	Areal Flood Advisory	LMK	Clark, Crawford, Floyd, Harrison, Washington	117 min
Apr 7, 10:57 AM EDT	Flash Flood Warning	LMK	Clark, Crawford, Floyd, Harrison, Washington	3 hr
Apr 7, 3:24 PM EDT	Flash Flood Warning	LMK	Crawford, Dubois, Orange	3 hr
Apr 7, 3:53 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois	32 min
Apr 7, 3:56 PM EDT	Special Weather Statement	LMK	Clark	29 min
Apr 7, 4:04 PM EDT	Severe Thunderstorm Warning	LMK	Perry	21 min
Apr 7, 4:10 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Perry	30 min
Apr 7, 4:11 PM EDT	Flash Flood Warning	LMK	Clark, Crawford, Floyd, Harrison, Washington	3 hr
Apr 7, 4:21 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois, Perry	24 min
Apr 7, 4:34 PM EDT	Severe Thunderstorm Warning	LMK	Harrison	31 min
Apr 7, 4:34 PM EDT	Tornado Warning	LMK	Crawford, Harrison, Perry	21 min
Apr 7, 4:37 PM EDT	Tornado Warning	LMK	Harrison	18 min
Apr 7, 4:40 PM EDT	Flash Flood Warning	LMK	Clark	3 hr
Apr 7, 5:04 PM EDT	Severe Thunderstorm Warning	LMK	Harrison	31 min
Apr 7, 5:12 PM EDT	Severe Thunderstorm Warning	LMK	Clark	28 min
Apr 7, 5:33 PM EDT	Severe Thunderstorm Warning	LMK	Floyd, Harrison	32 min
Apr 7, 7:38 PM EDT	River Flood Warning	LMK	Harrison, Washington	17 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2015 Every 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.