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December 1, 2018 · Autauga County · 2018
EF0

December 1, 2018

3:49 PM
Autauga County, Alabama · Near Maplesville (ZIP 36091)
Fatalities
0
Injuries
0
Path Length
0.3 mi
Max Width
100 yd
DateDecember 1, 2018
Time3:49 PM
CountyAutauga
CityMaplesville
Property Loss$0
Crop Loss$0
SourceNCEI 797779
NWS Birmingham

3 W Billingsley NWS Meteorologists have determined that a weak tornado touched down in Autauga County about three miles southwest of Billingsley. Though no damage was observed, a brief tornado most likely occurred in an inaccessible area approximately one-third mile north of the intersection of U.S. Highway 82 and County Road 37. At this intersection, storm chaser video shows what appears to be a funnel cloud with rising motion just west of Highway 82. Seconds later, rear-flank downdraft (RFD) winds are also evident as the storm chaser relocates to the south. This matches up well with radar data from KBMX, and a tornado debris signature (TDS) is noted downstream approximately two minutes after the video ended and for several more scans as the debris disperses. This TDS was also observed from KMXX radar. Around the time of the initial TDS from KBMX, a second video from the same storm chaser was taken one-half mile south of the first video, showing an occluding circulation and RFD clear slot. Start: 32.6326/-86.7415 End: 32.6326/-86.7371

NWS EF Scale: F0

Event Narrative

National Weather Service meteorologists surveyed damage in Autauga County and determined that it was consistent with an EF0 tornado, with maximum sustained winds near 65 mph. The tornado touched down in an inaccessible area approximately one-third of a mile north of the intersection of Highway 82 and County Road 37. At this intersection, storm chaser video shows what appears to be a funnel cloud with rising motion just west of Highway 82. Seconds later, rear-flank downdraft (RFD) winds are also evident as the storm chaser relocates to the south. This matches up well with radar data from KBMX, and a tornado debris signature (TDS) is noted downstream approximately two minutes after the video ended. This TDS was also observed from KMXX radar. Around the time of the initial TDS from KBMX, a second video from the same storm chaser was taken one-half mile south of the first video, showing an occluding circulation and RFD clear slot.

Episode Narrative

Isolated thunderstorms developed during the heating of the afternoon along a low level boundary in a highly sheared environment.

Outbreak Context

Part of 2-tornado outbreak on December 1, 2018

Shared Episode Narrative

Isolated thunderstorms developed during the heating of the afternoon along a low level boundary in a highly sheared environment.

Source Data
NCEI Event ID: 797779

See Also

0.3 mi100 yd wide