Severe Thunderstorm Watch 430

Issued

Aug 10, 2020, 6:31 PM CDT (23:31 UTC)

Expired

Aug 11, 2020, 12:00 AM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Evansville,IN radar (KVWX), 49 km from the middle of the area, began a volume at 23:33 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

5%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1457 Severe potential...watch possibleAug 10, 2:38 PM CDT
• Mesoscale Discussion 1461 Severe thunderstorm watch 428...429Aug 10, 5:17 PM CDT
• Mesoscale Discussion 1464 Severe thunderstorm watch 428...430...431Aug 10, 7:29 PM CDT

395 
WWUS20 KWNS 102328
SEL0  
SPC WW 102328
ILZ000-INZ000-KYZ000-MOZ000-110500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 430
NWS Storm Prediction Center Norman OK
630 PM CDT Mon Aug 10 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southern Illinois
  Southern Indiana
  Northern and western Kentucky
  Southeastern Missouri

* Effective this Monday night from 630 PM until Midnight CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...An extensive line of thunderstorms with a history of
damaging winds will continue to move southeastward through late
evening and early tonight.  The storm environment should remain
favorable for occasional downbursts with damaging outflow in the
line of storms.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 35 miles west of Cape
Girardeau MO to 60 miles north northeast of Louisville KY. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 427...WW 428...WW 429...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
32025.

...Thompson

Severe Thunderstorm Watches in Kentucky, 2020Severe Thunderstorm Watches in Indiana, 2020Severe Thunderstorm Watches in Illinois, 2020Every severe thunderstorm 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.