Tornado Watch 26

Issued

Feb 7, 2017, 7:54 AM CST (13:54 UTC)

Expired

Feb 7, 2017, 6:39 PM CST

In force

11 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

Two or more tornadoes

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 144Feb 7, 5:59 AM CST
• Mesoscale Discussion 146Feb 7, 10:18 AM CST
• Mesoscale Discussion 149Feb 7, 12:56 PM CST
• Mesoscale Discussion 155Feb 7, 5:39 PM CST

018 
WWUS20 KWNS 071353
SEL6  
SPC WW 071353
LAZ000-MSZ000-CWZ000-072000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 26
NWS Storm Prediction Center Norman OK
755 AM CST Tue Feb 7 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southern Louisiana
  Southern Mississippi
  Coastal Waters

* Effective this Tuesday morning and afternoon from 755 AM until
  200 PM CST.

* Primary threats include...
  A few tornadoes possible
  Scattered large hail likely with isolated very large hail events
    to 3 inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible

SUMMARY...Ahead of an approaching upper system, a relatively moist
air mass and cool temperatures aloft over the region will yield
initial supercells capable of large hail and a few tornadoes. A
damaging wind risk may increase later this afternoon as storms
spread eastward across southeast Mississippi toward southern
Alabama.

The tornado watch area is approximately along and 90 statute miles
north and south of a line from 45 miles south southwest of
Alexandria LA to 60 miles east southeast of Pine Belt MS. 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 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25030.

...Guyer

Tornado Watches in Mississippi, 2017Tornado Watches in Louisiana, 2017Every tornado watch in 2017

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.