Alert archive / Kentucky / Heat Advisories in 2021
Heat Advisory 6, NWS Paducah, KY
NWS Paducah, KY issued this heat advisory at Aug 10, 2021, 1:28 PM CDT for 14 counties in Kentucky; 9 counties in Illinois. It took effect at Aug 11, 2021, 12:00 PM CDT. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2021, 1:28 PM CDT (18:28 UTC)
- In effect from
- Aug 11, 2021, 12:00 PM CDT
- Expired
- Aug 12, 2021, 7:46 PM CDT
- In force
- 32 hr
- Issued by
- NWS Paducah, KY
All 23 counties
Edwards County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Pope County, IL, Saline County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Caldwell County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Henderson County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY
The radar
The Evansville,IN radar (KVWX), 79 km from the middle of the area, began a volume at 18:28 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, 6.5 hours before the alert went out and 197 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.
- Mixed-layer CAPE
- 1950 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 904 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Paducah, KY wrote its last area forecast discussion before this heat advisory went out at Aug 10, 12:28 PM CDT, 1 hour earlier.
Area forecast discussion, Aug 10, 12:28 PM CDT, 1 hour before
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</html>Hazardous weather outlook, Aug 10, 5:09 AM CDT, 8 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Paducah KY 509 AM CDT Tue Aug 10 2021 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-111000- Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton- White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope- Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh- Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves- Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell- Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean- Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter- Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid- 509 AM CDT Tue Aug 10 2021 This Hazardous Weather Outlook is for portions of southern Illinois, southwestern Indiana, western Kentucky, and southeastern Missouri. .DAY ONE...Today and Tonight Heat indices of 105 to 110 are possible today, thus a heat advisory is in effect for the entire region. Please refer to the advisory for details. There will be isolated to scattered thunderstorms today, with the best coverage east of the Mississippi River. Lightning and heavy rain will be the main hazards. However, some thunderstorms may produce strong wind gusts across southern Illinois, southwestern Indiana, and adjacent parts of the Kentucky Pennyrile region. Additional thunderstorm activity is possible in that same area tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorm coverage is expected to increase late Thursday and into Thursday night mainly east of the Mississippi River. Lightning and heavy rain will be the main hazards. Heat indices of up to 110 are possible in the western half of the region Wednesday and Thursday afternoons. A heat advisory is in effect for that area through Thursday. A good chance of thunderstorms is forecast with a cold frontal passage Friday into Saturday. A few strong storms with gusty winds will be possible Friday afternoon and evening, but the primary concerns will be locally heavy rainfall and lightning. Afternoon heat index values are forecast to top out near 100 degrees Friday over the southern half of the region. A small chance of mainly afternoon and evening thunderstorms is forecast for much of the region Monday. Locally heavy rainfall and lightning will be the primary concerns. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible this afternoon and evening.
The office that day
Everything else NWS Paducah, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 3:52 PM CDT | Special Weather Statement | PAH | Franklin, Jefferson, Perry | 38 min |
| Aug 10, 2:49 AM CDT | Special Weather Statement | PAH | Carter | 41 min |
| Aug 10, 3:42 AM CDT | Flash Flood Warning | PAH | Carter | 3 hr |
Nearby
Heat Advisories in Kentucky, 2021Heat Advisories in Illinois, 2021Every heat advisory 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.