Severe Thunderstorm Watch 164

Issued

May 11, 2021, 3:04 PM CDT (20:04 UTC)

Expired

May 11, 2021, 7:27 PM CDT

In force

4 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Houston radar (KHGX), 191 km from the middle of the area, began a volume at 20:08 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

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 594 Severe potential...watch possibleMay 11, 1:59 PM CDT
• Mesoscale Discussion 595 Severe thunderstorm watch 164May 11, 4:37 PM CDT
• Mesoscale Discussion 597 Severe thunderstorm watch 166May 11, 6:36 PM CDT

695 
WWUS20 KWNS 112002
SEL4  
SPC WW 112002
TXZ000-120200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 164
NWS Storm Prediction Center Norman OK
305 PM CDT Tue May 11 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Parts of east central and southeast Texas

* Effective this Tuesday afternoon and evening from 305 PM until
  900 PM CDT.

* 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...Isolated supercells along a surface front may persist for
another couple of hours, prior to outflow from central Texas
convection overtaking the front and leading to additional storm
development and intensification.  An brief tornado or two may occur
in the short term, but large hail and damaging winds will be the
main threats through the afternoon/evening as storm coverage
increases.

The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 45 miles north northwest
of Lufkin TX to 35 miles southeast of College Station TX. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).

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.

&&

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 550. Mean storm motion vector
27025.

...Thompson

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.