Tornado Watch 70

Issued

Mar 28, 2020, 3:53 PM CDT (20:53 UTC)

Expired

Mar 28, 2020, 8:55 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

55 kt

The St Louis radar (KLSX), 94 km from the middle of the area, began a volume at 20:55 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

40%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 250Mar 28, 1:17 PM CDT
• Mesoscale Discussion 255Mar 28, 4:59 PM CDT

398 
WWUS20 KWNS 282050
SEL0  
SPC WW 282050
ILZ000-KYZ000-MOZ000-290300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 70
NWS Storm Prediction Center Norman OK
350 PM CDT Sat Mar 28 2020

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  southern Illinois
  western Kentucky
  east-central and southeastern Missouri

* Effective this Saturday afternoon and evening from 350 PM until
  1000 PM CDT.

* Primary threats include...
  A few tornadoes possible
  Scattered damaging wind gusts to 65 mph possible
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...Strong/severe thunderstorms are forecast to develop
across/spread into WW #70 over the next couple of hours.  Along with
potential for large hail and locally damaging wind gusts, a couple
of tornadoes will also be possible across the mid Mississippi/lower
Ohio Valley area.

The tornado watch area is approximately along and 60 statute miles
north and south of a line from 60 miles west southwest of Farmington
MO to 75 miles east northeast of Mount Vernon IL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).

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 67...WW 68...WW 69...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 22040.

...Goss

Tornado Watches in Illinois, 2020Tornado Watches in Missouri, 2020Every tornado watch in 2020

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.