Tornado Watch 416

Issued

Oct 31, 2018, 3:02 PM CDT (20:02 UTC)

Expired

Nov 1, 2018, 12:00 AM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Shreveport radar (KSHV), 79 km from the middle of the area, began a volume at 20:03 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

60%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

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

20%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1601Oct 31, 2:14 PM CDT
• Mesoscale Discussion 1602Oct 31, 3:55 PM CDT
• Mesoscale Discussion 1604Oct 31, 6:14 PM CDT
• Mesoscale Discussion 1608Oct 31, 11:52 PM CDT

591 
WWUS20 KWNS 311959
SEL6  
SPC WW 311959
ARZ000-LAZ000-OKZ000-TXZ000-CWZ000-010300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 416
NWS Storm Prediction Center Norman OK
300 PM CDT Wed Oct 31 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southwestern Arkansas
  Northwestern Louisiana
  Extreme southeastern Oklahoma
  Much of east Texas
  Coastal Waters

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

* Primary threats include...
  A few tornadoes likely
  Scattered damaging wind gusts to 70 mph likely
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms will increase in coverage/intensity through
the evening along a cold front across central and northeastern
Texas, while other storms will continue to form ahead of the front
across southeastern Texas.  The storm environment will become more
favorable for rotating storms through the evening, with an attendant
threat for a few tornadoes, damaging winds, and isolated large hail.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 35 miles north northeast of Texarkana
AR to 70 miles west southwest of Houston TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).

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.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24030.

...Thompson

Tornado Watches in Texas, 2018Tornado Watches in Arkansas, 2018Tornado Watches in Louisiana, 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.