Tornado Watch 476

Issued

Aug 31, 2017, 11:13 AM CDT (16:13 UTC)

Expired

Aug 31, 2017, 10:00 PM CDT

In force

11 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

55 kt

The Columbus AFB radar (KGWX), 37 km from the middle of the area, began a volume at 16:15 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

20%

One or more gusts of 65 knots or more

10%

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

30%

• Mesoscale Discussion 1605Aug 31, 10:31 AM CDT
• Mesoscale Discussion 1607Aug 31, 2:35 PM CDT
• Mesoscale Discussion 1608Aug 31, 5:47 PM CDT

900 
WWUS20 KWNS 311611
SEL6  
SPC WW 311611
ALZ000-MSZ000-TNZ000-010100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 476
NWS Storm Prediction Center Norman OK
1115 AM CDT Thu Aug 31 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern and western Alabama
  Northeast Mississippi
  Southwest Tennessee

* Effective this Thursday morning and evening from 1115 AM until
  800 PM CDT.

* Primary threats include...
  A couple tornadoes possible
  Isolated damaging wind gusts to 65 mph possible

SUMMARY...Arcing bands of showers and storms will pose a risk for
brief tornadoes this afternoon into early evening.

The tornado watch area is approximately along and 70 statute miles
either side of a line from 60 miles north of Oxford MS to 55 miles
southeast of Tuscaloosa AL. 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 0.5 inches. Extreme turbulence and surface wind
gusts to 55 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 20030.

...Grams

Tornado Watches in Alabama, 2017Tornado Watches in Mississippi, 2017Tornado Watches in Tennessee, 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.