Tornado Watch 445

Issued

Dec 26, 2018, 9:34 PM CST (03:34 UTC)

Expired

Dec 27, 2018, 4:00 AM CST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Shreveport radar (KSHV), 168 km from the middle of the area, began a volume at 03:38 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

50%

• Mesoscale Discussion 1729Dec 26, 7:13 PM CST
• Mesoscale Discussion 1731Dec 26, 11:40 PM CST
• Mesoscale Discussion 1734Dec 27, 3:09 AM CST

271 
WWUS20 KWNS 270330
SEL5  
SPC WW 270330
TXZ000-271000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 445
NWS Storm Prediction Center Norman OK
930 PM CST Wed Dec 26 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  East-Central Texas

* Effective this Wednesday night and Thursday morning from 930 PM
  until 400 AM CST.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...As some additional warming and moistening occurs, isolated
storms could intensify late this evening/overnight ahead of an
eastward-moving convective line and cold front. While a particularly
widespread severe risk is not expected, adequate
moisture/instability exists in the presence of very strong
deep-layer/low-level shear for the possibility of damaging winds and
a tornado risk.

The tornado watch area is approximately along and 65 statute miles
east and west of a line from 25 miles north northeast of Tyler TX to
20 miles south southeast of College Station TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU5).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 442...WW 444...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23035.

...Guyer

Tornado Watches in Texas, 2018Every tornado watch in 2018

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.