Alert archive / Indiana / Heat Advisories in 2009

Heat Advisory 4, NWS Indianapolis, IN

June 26, 20097 counties in Indiana

NWS Indianapolis, IN issued this heat advisory at Jun 26, 2009, 11:14 AM EDT for 7 counties in Indiana. It took effect at Jun 26, 2009, 2:00 PM EDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jun 26, 2009, 11:14 AM EDT (15:14 UTC)
In effect from: Jun 26, 2009, 2:00 PM EDT
Expired: Jun 26, 2009, 6:00 PM EDT
In force: 4 hr
Issued by: NWS Indianapolis, IN

Counties Clay County, IN, Daviess County, IN, Greene County, IN, Knox County, IN, Martin County, IN, Sullivan County, IN, Vigo County, IN

The radar

The Evansville,IN radar (KVWX), 96 km from the middle of the area, began a volume at 15:14 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

Nashville Metro, TN (KBNA), launched 12:00Z, 3.2 hours before the alert went out and 324 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: 1347 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1149 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Indianapolis, IN wrote its last area forecast discussion before this heat advisory went out at Jun 26, 11:10 AM EDT, 4 minutes earlier.

Area forecast discussion, Jun 26, 11:10 AM EDT, 4 minutes before

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Hazardous weather outlook, Jun 26, 5:39 AM EDT, 5 hours 35 minutes before

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In the hours before

Local storm report, Jun 26, 6:02 AM EDT, 5 hours 12 minutes before

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The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 12:28 AM EDT	Flash Flood Warning	IND	Randolph	3 hr
Jun 26, 2:03 AM EDT	Severe Thunderstorm Warning	IND	Jackson, Jennings	26 min

Nearby

Heat Advisories in Indiana, 2009 Every heat advisory in 2009

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.