Tennessee, 2023Excessive Heat and Heat in Tennessee, August 13 to 14, 2023
August 13 to 14, 2023 · NWS HUN · 5 events in 3 counties and zones
Temperatures climbing to between 88 and 95 degrees along with dewpoints in the 78 to 82 degree range allowed heat index values to climb above 105 degrees during the late morning or early afternoon hours the 12th through the 14th. These heat index values continued through much of the afternoon before dropping below 105 degrees.
Every event with a place to put it; 5 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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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 5
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.
Temperatures climbing to between 88 and 95 degrees along with dewpoints in the 78 to 82 degree range allowed heat index values to climb above 105 degrees during the late morning or early afternoon hours the 12th through the 14th. These heat index values continued through much of the afternoon before dropping below 105 degrees. Heat index values peaked between 110 and 120 degrees in the afternoon on the 13th and 14th.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Huntsville, AL wrote its last area forecast discussion before the first event at Aug 13, 8:39 AM CST, 1 hour 21 minutes earlier.
Area forecast discussion, Aug 13, 8:39 AM CST, 1 hour 21 minutes before
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Special weather statement, Aug 13, 5:42 AM CST, 4 hours 18 minutes before
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</html>Heat, Franklin
- When
- August 13, 10:00 AM CST to August 14, 5:30 PM CST
- Where
- Franklin forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.155, -86.092 (the zone’s center; the record gives no point)
Through mesonet and official NWS observations, it was determined that temperatures climbed into the 88 to 96 degree range during the late morning into the afternoon hours. This combined with very moist boundary layer conditions (surface dewpoints in the 78 to 82 degree range) to produce heat index values of 105 degrees or above. These heat index values continued until around 6:30 PM before dropping below 105 degrees in most locations.
Heat, Lincoln
- When
- August 13, 10:00 AM CST to August 14, 5:30 PM CST
- Where
- Lincoln forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.141, -86.589 (the zone’s center; the record gives no point)
Through mesonet and official NWS observations, it was determined that temperatures climbed into the 88 to 96 degree range during the late morning into the afternoon hours. This combined with very moist boundary layer conditions (surface dewpoints in the 78 to 82 degree range) to produce heat index values of 105 degrees or above. These heat index values continued until around 6:30 PM before dropping below 105 degrees in most locations.
Heat, Moore
- When
- August 13, 11:00 AM CST to August 14, 5:30 PM CST
- Where
- Moore forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.285, -86.359 (the zone’s center; the record gives no point)
Through mesonet and official NWS observations, it was determined that temperatures climbed into the 88 to 93 degree range during the late morning into the afternoon hours. This combined with very moist boundary layer conditions (surface dewpoints in the 76 to 81 degree range) to produce heat index values of 105 degrees or above. These heat index values continued until around 6:30 PM before dropping below 105 degrees in most locations.
Excessive Heat, Franklin
- When
- August 13, 12:00 PM CST to August 14, 5:00 PM CST
- Where
- Franklin forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.155, -86.092 (the zone’s center; the record gives no point)
Through mesonet and official NWS observations, it was determined that temperatures climbed into the 88 to 96 degree range during the late morning into the afternoon hours as dewpoints remained in the 78 to 83 degree range. These heat index values peaked between 110 and 115 degrees on the 13th and 14th.
Excessive Heat, Lincoln
- When
- August 13, 12:00 PM CST to August 14, 5:00 PM CST
- Where
- Lincoln forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.141, -86.589 (the zone’s center; the record gives no point)
Through mesonet and official NWS observations, it was determined that temperatures climbed into the 88 to 96 degree range during the late morning into the afternoon hours as dewpoints remained in the 78 to 83 degree range. These heat index values peaked between 110 and 115 degrees on the 13th and 14th.
- Heat
- Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
- 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.
- Heat in Arizona, August 13, 20231 death · 1 event
- Flash Flooding and Flooding in Missouri, August 13 to 14, 20233 injured · $245,000 · 1 in hail · 29 events
- Flash Flooding and Damaging Winds in Oklahoma, August 13 to 14, 2023$99,000 · 70 kt wind · 30 events
- Damaging Winds in Tennessee, August 13, 2023$78,000 · 52 kt wind · 20 events
- Damaging Winds in Tennessee, August 13, 2023$90,000 · 50 kt wind · 3 events
- Flash Flooding and Hail in Maine, August 13, 20232 injured · 2 in hail · 24 events
- Excessive Heat in Louisiana, August 13, 202336 events
- Damaging Winds in Alabama, August 13, 2023$20,000 · 52 kt wind · 19 events
- Excessive Heat in Oklahoma, August 13, 202322 events
- Flash Flood and Hail in Oklahoma, August 13 to 14, 2023$7,000 · 1.75 in hail · 21 events
- Flood and Hail in Maine, August 13, 20231.75 in hail · 12 events
- Excessive Heat in Mississippi, August 13, 202311 events
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: 1138623, 1138625, 1138634, 1138624, 1138626.