Severe Thunderstorm Watch 172

Issued

May 15, 2021, 2:49 PM MDT (20:49 UTC)

Expired

May 15, 2021, 10:00 PM MDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Amarillo radar (KAMA), 57 km from the middle of the area, began a volume at 20:50 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

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

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 620 Severe potential...watch possibleMay 15, 1:25 PM MDT
• Mesoscale Discussion 622 Severe potential...severe thunderstorm watch likelyMay 15, 1:57 PM MDT
• Mesoscale Discussion 624 Severe thunderstorm watch 172May 15, 4:56 PM MDT
• Mesoscale Discussion 626 Severe thunderstorm watch 173May 15, 5:35 PM MDT
• Mesoscale Discussion 631 Severe thunderstorm watch 172May 15, 8:09 PM MDT

354 
WWUS20 KWNS 152047
SEL2  
SPC WW 152047
NMZ000-OKZ000-TXZ000-160400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 172
NWS Storm Prediction Center Norman OK
350 PM CDT Sat May 15 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northeast New Mexico
  Oklahoma Panhandle
  West/Northwest Texas

* Effective this Saturday afternoon and evening from 350 PM until
  1100 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

SUMMARY...Slow eastward-moving storms are expected to gradually
intensify through late afternoon/early from eastern New Mexico into
west/northwest Texas including the Panhandle. Isolated large hail
will be possible with a tendency for clustering by evening leading
to an increasing potential for severe-caliber wind gusts.

The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 40 miles north northeast
of Clayton NM to 50 miles south southwest of Lubbock TX. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).

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 500. Mean storm motion vector
28020.

...Guyer

Severe Thunderstorm Watches in Texas, 2021Severe Thunderstorm Watches in New Mexico, 2021Severe Thunderstorm Watches in Oklahoma, 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.