Tornado Watch 358

Issued

Jun 20, 2017, 10:24 PM CDT (03:24 UTC)

Expired

Jun 21, 2017, 10:00 AM CDT

In force

12 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

60 kt

The Mobile radar (KMOB), 80 km from the middle of the area, began a volume at 03:24 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

20%

Ten or more severe wind reports

10%

One or more gusts of 65 knots or more

5%

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

60%

• Mesoscale Discussion 1104Jun 20, 8:15 PM CDT
• Mesoscale Discussion 1105Jun 20, 9:48 PM CDT
• Mesoscale Discussion 1106Jun 21, 2:08 AM CDT
• Mesoscale Discussion 1107Jun 21, 7:47 AM CDT

804 
WWUS20 KWNS 210320
SEL8  
SPC WW 210320
ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-211500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 358
NWS Storm Prediction Center Norman OK
1020 PM CDT Tue Jun 20 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southern Alabama
  Florida Panhandle
  Southern Louisiana
  Southern Mississippi
  Coastal Waters

* Effective this Tuesday night and Wednesday morning from 1020 PM
  until 1000 AM CDT.

* Primary threats include...
  A few tornadoes possible

SUMMARY...A strong low/mid-level wind field on the periphery of
Tropical Storm Cindy, in conjunction with an increasingly moist
maritime air mass (75+ F surface dewpoints), will support an
increasing risk for tornadoes through the overnight and early
morning hours of Wednesday.

The tornado watch area is approximately along and 50 statute miles
north and south of a line from 50 miles west northwest of Houma LA
to 40 miles south southeast of Marianna FL. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU8).

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 0.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 15020.

...Guyer

Tornado Watches in Louisiana, 2017Tornado Watches in Florida, 2017Tornado Watches in Mississippi, 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; radar from the NEXRAD Level II archive.