Severe Thunderstorm Watch 159

Issued

May 9, 2021, 3:01 PM CDT (20:01 UTC)

Expired

May 9, 2021, 10:16 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Ft Hood radar (KGRK), 61 km from the middle of the area, began a volume at 20:02 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

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 568 Severe potential...watch likelyMay 9, 12:14 PM CDT
• Mesoscale Discussion 570 Severe potential...severe thunderstorm watch likelyMay 9, 1:41 PM CDT
• Mesoscale Discussion 577 Severe thunderstorm watch 159May 9, 8:06 PM CDT

473 
WWUS20 KWNS 091959
SEL9  
SPC WW 091959
TXZ000-100300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 159
NWS Storm Prediction Center Norman OK
300 PM CDT Sun May 9 2021

The NWS Storm Prediction Center has issued a

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

* Effective this Sunday afternoon and evening from 300 PM until
  1000 PM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 3
    inches in diameter likely
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Scattered severe thunderstorms are expected to form this
afternoon and persist into late evening, along and ahead of a
slow-moving cold front.  The storm environment will favor splitting
supercells initially with the threat for isolated very large hail to
baseball size or larger.  By this evening, some clustering of storms
could also lead to an increase in the threat for damaging outflow
gusts.

The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 60 miles northwest of
San Antonio TX to 5 miles southeast of Tyler TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).

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 157...WW 158...

AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
30020.

...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.