Alert archive / Indiana / Special Weather Statements in 2021

Special Weather Statement, NWS Louisville, KY

October 15, 2021Washington County, Indiana

NWS Louisville, KY issued this special weather statement at Oct 15, 2021, 2:28 PM EDT for Washington County, Indiana. It was in force for 32 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: Oct 15, 2021, 2:28 PM EDT (18:28 UTC)
Expired: Oct 15, 2021, 3:00 PM EDT
In force: 32 min
Issued by: NWS Louisville, KY
Hail: 0.00 in
Wind: 30

County Washington County, IN

The radar

The Louisville radar (KLVX), 80 km from the middle of the area, began a volume at 18:30 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, 6.5 hours before the alert went out and 217 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: 44 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 117 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 Oct 15, 1:52 PM EDT, 36 minutes earlier.

Area forecast discussion, Oct 15, 1:52 PM EDT, 36 minutes before

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Hazardous weather outlook, Oct 15, 11:01 AM EDT, 3 hours 27 minutes before

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In the hours before

Special weather statement, Oct 15, 2:28 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Louisville KY
228 PM EDT Fri Oct 15 2021

INZ076-077-084-151900-
Crawford IN-Orange IN-Washington IN-
228 PM EDT Fri Oct 15 2021

...A strong thunderstorm will impact portions of northwestern
Crawford, southeastern Orange and western Washington Counties through
300 PM EDT...

At 227 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles east of Paoli, moving northeast at 35 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This strong thunderstorm will be near...
  Salem around 245 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Heavy rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3878 8606 3876 8603 3877 8602 3876 8601
      3877 8598 3876 8599 3875 8597 3857 8604
      3850 8616 3833 8639 3832 8661 3868 8625
      3878 8618 3876 8614 3877 8610 3878 8610
TIME...MOT...LOC 1827Z 242DEG 32KT 3857 8629

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

JDG

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 15, 5:47 PM EDT	Special Weather Statement	LMK	Logan	28 min

Nearby

Special Weather Statements in Indiana, 2021 Every special weather statement in 2021

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.