Severe Thunderstorm Watch 18

Issued

Mar 12, 2021, 8:38 PM CST (02:38 UTC)

Expired

Mar 13, 2021, 2:00 AM CST

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Amarillo radar (KAMA), 69 km from the middle of the area, began a volume at 02:39 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.

Two or more tornadoes

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 158 Tornado watch 17Mar 12, 5:58 PM CST
• Mesoscale Discussion 159 Tornado watch 17Mar 12, 8:11 PM CST
• Mesoscale Discussion 160 Severe thunderstorm watch 18Mar 12, 11:08 PM CST
• Mesoscale Discussion 161 Severe thunderstorm watch 18Mar 13, 1:06 AM CST

698 
WWUS20 KWNS 130234
SEL8  
SPC WW 130234
TXZ000-130800-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 18
NWS Storm Prediction Center Norman OK
835 PM CST Fri Mar 12 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  West and Northwest Texas

* Effective this Friday night and Saturday morning from 835 PM
  until 200 AM CST.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Multiple cluster of intense thunderstorms are affecting
the watch area.  Storms are likely to re-develop in the next few
hours, maintaining a risk of a few severe storms capable of large
hail and damaging wind gusts.

The severe thunderstorm watch area is approximately along and 95
statute miles north and south of a line from 45 miles west northwest
of Plainview TX to 35 miles east of Childress TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU8).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 17...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
24035.

...Hart

Severe Thunderstorm Watches in Texas, 2021Every severe thunderstorm watch 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.