Excessive Heat in Kentucky, July 21 to 23, 2017

Name: Excessive Heat in Kentucky, July 21 to 23, 2017
Start: 2017-07-21T11:00
End: 2017-07-23T18:00
Location: Kentucky

July 21 to 23, 2017 · NWS PAH · 22 events in 22 counties and zones

Where it happened

Every event with a place to put it; 22 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 22

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PAH wrote it up.

A large upper-level high resulted in two to three days of dangerously high heat indices from 105 to 115 degrees. The large high in the upper levels of the atmosphere expanded over much of the southern two-thirds of the United States for a few days. The center of the high gradually shifted east from the southern Plains on the 20th to the middle Mississippi Valley on the 22nd. The high then weakened and shrank on the 23rd. The daily peak heat indices at Paducah during the hot weather were 109 degrees on the 21st and 107 degrees on the 22nd. At Hopkinsville, the peak heat index was 106 on the 21st, 107 on the 22nd, and about 105 on the 23rd. A number of Kentucky mesonet sites and automated airport sites reported peak heat indices from 110 to 115 on the 21st and 22nd. Actual air temperatures reached the mid to upper 90's both afternoons. Overnight lows were in the mid to upper 70's. Cooling centers were opened in Marshall County to accomodate residents needing help.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

22 excessive heat. Local standard time, as filed.

Excessive Heat, Ballard

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Ballard forecast zone
Reported by: ASOS
Coordinates: 37.058, -88.999 (the zone’s center; the record gives no point)

Excessive Heat, Caldwell

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Caldwell forecast zone
Reported by: Mesonet
Coordinates: 37.145, -87.868 (the zone’s center; the record gives no point)

Excessive Heat, Calloway

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Calloway forecast zone
Reported by: Mesonet
Coordinates: 36.621, -88.272 (the zone’s center; the record gives no point)

Excessive Heat, Carlisle

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Carlisle forecast zone
Reported by: Mesonet
Coordinates: 36.853, -88.971 (the zone’s center; the record gives no point)

Excessive Heat, Christian

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Christian forecast zone
Reported by: Mesonet
Coordinates: 36.894, -87.490 (the zone’s center; the record gives no point)

Excessive Heat, Crittenden

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Crittenden forecast zone
Reported by: Mesonet
Coordinates: 37.353, -88.097 (the zone’s center; the record gives no point)

Excessive Heat, Daviess

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Daviess forecast zone
Reported by: Mesonet
Coordinates: 37.732, -87.087 (the zone’s center; the record gives no point)

Excessive Heat, Fulton

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Fulton forecast zone
Reported by: Mesonet
Coordinates: 36.554, -89.188 (the zone’s center; the record gives no point)

Excessive Heat, Graves

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Graves forecast zone
Reported by: Mesonet
Coordinates: 36.723, -88.651 (the zone’s center; the record gives no point)

Excessive Heat, Henderson

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Henderson forecast zone
Reported by: Mesonet
Coordinates: 37.796, -87.573 (the zone’s center; the record gives no point)

Excessive Heat, Hickman

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Hickman forecast zone
Reported by: Mesonet
Coordinates: 36.678, -88.976 (the zone’s center; the record gives no point)

Excessive Heat, Hopkins

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Hopkins forecast zone
Reported by: Mesonet
Coordinates: 37.309, -87.541 (the zone’s center; the record gives no point)

Excessive Heat, Livingston

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Livingston forecast zone
Reported by: Mesonet
Coordinates: 37.210, -88.354 (the zone’s center; the record gives no point)

Excessive Heat, Lyon

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Lyon forecast zone
Reported by: Mesonet
Coordinates: 37.019, -88.083 (the zone’s center; the record gives no point)

Excessive Heat, Marshall

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Marshall forecast zone
Reported by: Mesonet
Coordinates: 36.884, -88.329 (the zone’s center; the record gives no point)

Excessive Heat, McCracken

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: McCracken forecast zone
Reported by: ASOS
Coordinates: 37.054, -88.713 (the zone’s center; the record gives no point)

Excessive Heat, McLean

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: McLean forecast zone
Reported by: ASOS
Coordinates: 37.529, -87.264 (the zone’s center; the record gives no point)

Excessive Heat, Muhlenberg

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Muhlenberg forecast zone
Reported by: ASOS
Coordinates: 37.216, -87.142 (the zone’s center; the record gives no point)

Excessive Heat, Todd

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Todd forecast zone
Reported by: Mesonet
Coordinates: 36.836, -87.179 (the zone’s center; the record gives no point)

Excessive Heat, Trigg

When: July 21, 11:00 AM CST to July 23, 6:00 PM CST
Where: Trigg forecast zone
Reported by: Mesonet
Coordinates: 36.806, -87.873 (the zone’s center; the record gives no point)

Excessive Heat, Union

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Union forecast zone
Reported by: Mesonet
Coordinates: 37.659, -87.945 (the zone’s center; the record gives no point)

Excessive Heat, Webster

When: July 21, 11:00 AM CST to July 22, 6:00 PM CST
Where: Webster forecast zone
Reported by: Mesonet
Coordinates: 37.518, -87.683 (the zone’s center; the record gives no point)

What these are

Excessive Heat: Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Kentucky in 2017 Every state in 2017 This day in weather history Warnings in Kentucky, July 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 706738, 706739, 706741, 706742, 706743, 706744, 706745, 706746, 706748, 706749, 706750, 706751, 706752, 706753, 706754, 706755, 706756, 706757, 706758, 706760, 706761, 706763.