Mesoscale Discussion 167

Issued

Mar 13, 2021, 3:46 PM CST (21:46 UTC)

Expired

Mar 13, 2021, 4:45 PM CST

In force

59 min

Issued by

the Storm Prediction Center

Concerning

Tornado watch 19...20

Counties Armstrong County, TX, Briscoe County, TX, Carson County, TX, Donley County, TX, Floyd County, TX, Hale County, TX, Hutchinson County, TX, Moore County, TX, Potter County, TX, Randall County, TX, Swisher County, TX

The Amarillo radar (KAMA), 19 km from the middle of the area, began a volume at 21:48 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.

102 
ACUS11 KWNS 132147
SWOMCD
SPC MCD 132146 
TXZ000-132245-

Mesoscale Discussion 0167
NWS Storm Prediction Center Norman OK
0346 PM CST Sat Mar 13 2021

Areas affected...portions of the TX Panhandle

Concerning...Tornado Watch 19...20...

Valid 132146Z - 132245Z

The severe weather threat for Tornado Watch 19, 20 continues.

SUMMARY...A couple of tornadoes have recently been reported with
supercells entering Randall and Swisher Counties. Additional storms
continue to show moderate to strong rotation across the TX
Panhandle. Strong tornadoes continue to be possible over the next
couple of hours.

DISCUSSION...Several storms have now produced funnel clouds and
tornadoes between Amarillo and Lubbock. Cells over Randall and
Swisher County have recently shown strong rotation and will continue
to move into a moderately unstable airmass with increasing low-level
shear. As a result, expect that the threat for very large hail and
additional tornadoes, some possibly strong, will continue downstream
for the next few hours. 

Further to the north, a messier storm mode has developed closer to
the surface boundary over Moore and Potter Counties. Nevertheless,
occasionally strong rotation has been noted. Low level shear is
likely being enhanced along the surface boundary, allowing periodic
intensification of low level mesocyclones. Damaging gusts and
tornadoes will continue to be possible with this activity, despite
the more linear/clustered storm mode. 

Additional storms are developing over Hale and Floyd counties. These
storms have been struggling to organize, but also will continue to
move into a similar airmass as that further to the north where
tornadoes have already occurred. These storms also could intensify
and produce significant severe weather over the next couple of hours
as they approach the far eastern TX Panhandle.

..Leitman.. 03/13/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...LUB...AMA...

LAT...LON   35970214 36000133 35750093 34530072 33970108 33910168
            34060220 34890230 35600232 35970214

Mesoscale Discussions in Texas, 2021Every mesoscale discussion in 2021

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.