Alert archive / Alabama / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 32, NWS Huntsville, AL

April 7, 2019Cullman County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Apr 7, 2019, 5:53 PM CDT for Cullman County, Morgan County, Alabama. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 7, 2019, 5:53 PM CDT (22:53 UTC)
Expired: Apr 7, 2019, 6:30 PM CDT
In force: 37 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Cullman County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 100 km from the middle of the area, began a volume at 22:56 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.9 hours before the alert went out and 241 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1078 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 7, 2:51 PM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, Apr 7, 2:51 PM CDT, 3 hours 2 minutes before

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Hazardous weather outlook, Apr 7, 3:33 PM CDT, 2 hours 20 minutes before

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In the hours before

Special weather statement, Apr 7, 4:31 PM CDT, 1 hour 22 minutes before

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Special weather statement, Apr 7, 4:55 PM CDT, 58 minutes before

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Special weather statement, Apr 7, 5:18 PM CDT, 35 minutes before

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Special weather statement, Apr 7, 5:19 PM CDT, 34 minutes before

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Special weather statement, Apr 7, 5:41 PM CDT, 12 minutes before

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Local storm report, Apr 7, 5:51 PM CDT, 2 minutes before

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The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 6, 8:33 PM CDT	Special Weather Statement	HUN	Franklin, Lawrence	42 min
Apr 6, 8:51 PM CDT	Special Weather Statement	HUN	Cullman	39 min
Apr 6, 9:11 PM CDT	Special Weather Statement	HUN	Lawrence, Limestone	34 min
Apr 6, 9:30 PM CDT	Special Weather Statement	HUN	Marshall	45 min
Apr 7, 3:44 PM CDT	Special Weather Statement	HUN	Morgan	61 min
Apr 7, 4:11 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison, Morgan	49 min
Apr 7, 4:31 PM CDT	Special Weather Statement	HUN	Jackson	44 min
Apr 7, 4:55 PM CDT	Special Weather Statement	HUN	Morgan	50 min
Apr 7, 4:58 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	19 min
Apr 7, 5:08 PM CDT	Severe Thunderstorm Warning	HUN	Marshall, Morgan	52 min
Apr 7, 5:18 PM CDT	Special Weather Statement	HUN	Jackson	42 min
Apr 7, 5:41 PM CDT	Special Weather Statement	HUN	Cullman	49 min
Apr 7, 6:02 PM CDT	Special Weather Statement	HUN	Jackson	43 min
Apr 7, 6:46 PM CDT	Special Weather Statement	HUN	Jackson	44 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2019 Every severe thunderstorm warning in 2019

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.