Tornado Watch 419

Issued

Oct 31, 2018, 11:07 PM CDT (04:07 UTC)

Expired

Nov 1, 2018, 7:46 AM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Jackson/Brandon,MS radar (KDGX), 34 km from the middle of the area, began a volume at 04:09 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

50%

One or more EF2 to EF5 tornadoes

40%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1607Oct 31, 10:01 PM CDT
• Mesoscale Discussion 1609Nov 1, 1:19 AM CDT
• Mesoscale Discussion 1611Nov 1, 4:30 AM CDT

826 
WWUS20 KWNS 010405
SEL9  
SPC WW 010405
ARZ000-LAZ000-MSZ000-CWZ000-011200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 419
NWS Storm Prediction Center Norman OK
1105 PM CDT Wed Oct 31 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southeast Arkansas
  Southeast Louisiana
  Mississippi
  Coastal Waters

* Effective this Wednesday night and Thursday morning from 1105
  PM until 700 AM CDT.

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

SUMMARY...In advance of an approaching upper-level trough, low-level
moistening will continue to occur across the region along with
continually strengthening low-level shear. This will be conducive
for a mixed convective mode including linearly related bowing
segments along with some supercells along/ahead of the convective
line. The potential exists for damaging winds and tornadoes, a
couple of which could be strong, through the early morning hours of
Thursday.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 40 miles northeast of Greenwood MS to
15 miles east of Houma LA. For a complete depiction of the watch see
the associated watch outline update (WOUS64 KWNS WOU9).

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 417...WW 418...

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 24040.

...Guyer

Tornado Watches in Mississippi, 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.