Severe Thunderstorm Watch 187

Issued

May 17, 2021, 10:58 PM CDT (03:58 UTC)

Expired

May 18, 2021, 6:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Midland/Odessa radar (KMAF), 59 km from the middle of the area, began a volume at 04:02 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

20%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

20%

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

40%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 658 Severe potential...watch likelyMay 17, 7:04 PM CDT
• Mesoscale Discussion 660 Tornado watch 182...183...185May 17, 7:37 PM CDT
• Mesoscale Discussion 663 Tornado watch 182...183May 17, 9:44 PM CDT
• Mesoscale Discussion 664 Tornado watch 185May 17, 10:23 PM CDT
• Mesoscale Discussion 665 Severe potential...severe thunderstorm watch likelyMay 17, 10:35 PM CDT
• Mesoscale Discussion 666 Severe thunderstorm watch 186May 17, 11:37 PM CDT
• Mesoscale Discussion 668 Severe thunderstorm watch 187May 18, 1:29 AM CDT
• Mesoscale Discussion 670 Severe thunderstorm watch 187May 18, 5:07 AM CDT

764 
WWUS20 KWNS 180355
SEL7  
SPC WW 180355
TXZ000-181100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 187
NWS Storm Prediction Center Norman OK
1100 PM CDT Mon May 17 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  West Texas

* Effective this Monday night and Tuesday morning from 1100 PM
  until 600 AM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 3
    inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Redevelopment of discrete cells quickly growing upscale
into one or more clusters is expected overnight across the Permian
Basin towards the Concho Valley. Very large hail during the initial
phase of storm development should be the primary hazard.

The severe thunderstorm watch area is approximately along and 80
statute miles north and south of a line from 45 miles west of
Midland TX to 45 miles north northeast of Junction TX. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).

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 181...WW 182...WW
183...WW 184...WW 185...WW 186...

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
25025.

...Grams

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.