Alert archive / Alabama / Heat Advisories in 2016
Heat Advisory 2, NWS Huntsville, AL
NWS Huntsville, AL issued this heat advisory at Jul 21, 2016, 2:24 PM CDT for 9 counties in Alabama; Lincoln County, Tennessee. It took effect at Jul 22, 2016, 1:00 PM CDT. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Jul 21, 2016, 2:24 PM CDT (19:24 UTC)
- In effect from
- Jul 22, 2016, 1:00 PM CDT
- Expired
- Jul 23, 2016, 7:00 PM CDT
- In force
- 30 hr
- Issued by
- NWS Huntsville, AL
Counties Colbert County, AL, Cullman County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Lincoln County, TN
The radar
The Northeast Alabama radar (KHTX), 97 km from the middle of the area, began a volume at 19:26 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
Birmingham, AL (KBMX), launched 12:00Z, 7.4 hours before the alert went out and 163 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
- 1505 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -3 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 Huntsville, AL wrote its last area forecast discussion before this heat advisory went out at Jul 21, 12:30 PM CDT, 1 hour 54 minutes earlier.
Area forecast discussion, Jul 21, 12:30 PM CDT, 1 hour 54 minutes before
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</html>The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:20 PM CDT | Special Weather Statement | HUN | Jackson | 25 min |
| Jul 21, 6:23 PM CDT | Special Weather Statement | HUN | Cullman | 37 min |
| Jul 21, 6:50 PM CDT | Special Weather Statement | HUN | Jackson | 25 min |
Nearby
Heat Advisories in Alabama, 2016Heat Advisories in Tennessee, 2016Every heat advisory in 2016
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.