Alert archive / Indiana / Special Weather Statements in 2010

Special Weather Statement, NWS Louisville, KY

August 4, 2010Jefferson County, Indiana

NWS Louisville, KY issued this special weather statement at Aug 4, 2010, 11:40 PM EDT for Jefferson County, Indiana. It was in force for 35 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: Aug 4, 2010, 11:40 PM EDT (03:40 UTC)
Expired: Aug 5, 2010, 12:15 AM EDT
In force: 35 min
Issued by: NWS Louisville, KY

County Jefferson County, IN

The radar

The Louisville radar (KLVX), 107 km from the middle of the area, began a volume at 03:43 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, 3.7 hours before the alert went out and 158 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: 876 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1689 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.6

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 Aug 4, 9:52 PM EDT, 1 hour 48 minutes earlier.

Area forecast discussion, Aug 4, 9:52 PM EDT, 1 hour 48 minutes before

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Hazardous weather outlook, Aug 4, 9:32 PM EDT, 2 hours 8 minutes before

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In the hours before

Special weather statement, Aug 4, 8:08 PM EDT, 3 hours 32 minutes before

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Local storm report, Aug 4, 8:20 PM EDT, 3 hours 20 minutes before

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Special weather statement, Aug 4, 8:31 PM EDT, 3 hours 9 minutes before

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Special weather statement, Aug 4, 9:10 PM EDT, 2 hours 30 minutes before

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Special weather statement, Aug 4, 11:29 PM EDT, 11 minutes before

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Special weather statement, Aug 4, 11:40 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:31 PM EDT	Special Weather Statement	LMK	Logan	29 min
Aug 4, 11:29 PM EDT	Special Weather Statement	LMK	Metcalfe	31 min
Aug 4, 11:44 PM EDT	Special Weather Statement	LMK	Adair	31 min
Aug 4, 11:58 PM EDT	Special Weather Statement	LMK	Adair, Russell	47 min
Aug 5, 2:12 AM EDT	Special Weather Statement	LMK	Adair	33 min
Aug 5, 3:21 AM EDT	Heat Advisory	LMK	Adair, Allen, Barren, Boyle, Butler, Casey and 16 more	10 hr
Aug 5, 4:37 AM EDT	Special Weather Statement	LMK	Harrison	38 min
Aug 5, 9:24 AM EDT	Special Weather Statement	LMK	Henry, Jefferson, Oldham	21 min
Aug 5, 9:48 AM EDT	Special Weather Statement	LMK	Henry	27 min
Aug 5, 9:54 AM EDT	Severe Thunderstorm Warning	LMK	Franklin, Henry	36 min
Aug 5, 10:26 AM EDT	Special Weather Statement	LMK	Harrison	34 min
Aug 5, 10:33 AM EDT	Severe Thunderstorm Warning	LMK	Harrison	27 min
Aug 5, 10:48 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Nicholas	27 min
Aug 5, 12:13 PM EDT	Special Weather Statement	LMK	Allen	32 min
Aug 5, 12:19 PM EDT	Severe Thunderstorm Warning	LMK	Green, Hart	26 min
Aug 5, 12:29 PM EDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	31 min
Aug 5, 1:08 PM EDT	Special Weather Statement	LMK	Adair, Boyle, Casey, Garrard, Lincoln	52 min
Aug 5, 1:11 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Metcalfe, Russell, Taylor	34 min
Aug 5, 1:21 PM EDT	Severe Thunderstorm Warning	LMK	Casey, Lincoln	39 min
Aug 5, 1:28 PM EDT	Special Weather Statement	LMK	Clinton	47 min
Aug 5, 1:33 PM EDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland	42 min
Aug 5, 1:47 PM EDT	Severe Thunderstorm Warning	LMK	Casey	13 min
Aug 5, 2:04 PM EDT	Special Weather Statement	LMK	Clinton, Russell	26 min
Aug 5, 7:37 PM EDT	Special Weather Statement	LMK	Russell	23 min
Aug 5, 7:55 AM EDT	Special Weather Statement	LMK	Orange	35 min
Aug 5, 7:56 AM EDT	Special Weather Statement	LMK	Orange	34 min
Aug 5, 8:27 AM EDT	Special Weather Statement	LMK	Dubois	33 min
Aug 5, 8:57 AM EDT	Special Weather Statement	LMK	Clark, Floyd, Harrison	33 min

Nearby

Special Weather Statements in Indiana, 2010 Every special weather statement in 2010

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.