Alert archive / Tennessee / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 57, NWS Memphis, TN

March 12, 2020Dyer County, Lake County, Obion County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Mar 12, 2020, 11:41 AM CDT for Dyer County, Lake County, Obion County, Tennessee. It was in force for 34 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: Mar 12, 2020, 11:41 AM CDT (16:41 UTC)
Expired: Mar 12, 2020, 12:15 PM CDT
In force: 34 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dyer County, TN, Lake County, TN, Obion County, TN

The radar

The Paducah radar (KPAH), 105 km from the middle of the area, began a volume at 16:42 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

Little Rock, AR (KLZK), launched 12:00Z, 4.7 hours before the alert went out and 167 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: 210 J/kg
Mixed-layer CIN: -230 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 12, 7:02 AM CDT, 4 hours 39 minutes earlier.

Area forecast discussion, Mar 12, 7:02 AM CDT, 4 hours 39 minutes before

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Hazardous weather outlook, Mar 12, 5:14 AM CDT, 6 hours 27 minutes before

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In the hours before

Special weather statement, Mar 12, 9:39 AM CDT, 2 hours 2 minutes before

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Special weather statement, Mar 12, 10:30 AM CDT, 1 hour 11 minutes before

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Special weather statement, Mar 12, 11:01 AM CDT, 40 minutes before

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Special weather statement, Mar 12, 11:35 AM CDT, 6 minutes before

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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 12:11 PM CDT	River Flood Advisory	MEG	Tunica	15 days
Mar 12, 9:39 AM CDT	Special Weather Statement	MEG	Lake	51 min
Mar 12, 10:30 AM CDT	Special Weather Statement	MEG	Lake, Obion	45 min
Mar 12, 11:01 AM CDT	Special Weather Statement	MEG	Dyer, Weakley	29 min
Mar 12, 11:09 AM CDT	Severe Thunderstorm Warning	MEG	Dyer, Gibson, Weakley	23 min
Mar 12, 11:35 AM CDT	Special Weather Statement	MEG	Lake, Obion	40 min
Mar 12, 12:05 PM CDT	River Flood Warning	MEG	Dyer, Lake, Lauderdale	45 days
Mar 12, 12:05 PM CDT	River Flood Warning	MEG	Lauderdale, Tipton	51 days
Mar 12, 12:11 PM CDT	River Flood Advisory	MEG	Lake	7 days
Mar 12, 12:18 PM CDT	Special Weather Statement	MEG	Obion, Weakley	27 min
Mar 12, 12:21 PM CDT	Special Weather Statement	MEG	Henry	24 min
Mar 12, 12:47 PM CDT	Special Weather Statement	MEG	Henry	28 min
Mar 12, 1:05 PM CDT	Special Weather Statement	MEG	Obion	25 min
Mar 12, 1:25 PM CDT	River Flood Advisory	MEG	Decatur, Hardin	3 days
Mar 12, 5:57 PM CDT	Special Weather Statement	MEG	Craighead	48 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2020 Every severe thunderstorm warning in 2020

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.