Tornado Watch 560

Issued

Dec 11, 2021, 12:20 AM EST (05:20 UTC)

Expired

Dec 11, 2021, 5:53 AM EST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

65 kt

The Cincinnati radar (KILN), 100 km from the middle of the area, began a volume at 05:20 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

60%

One or more gusts of 65 knots or more

40%

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

70%

• Mesoscale Discussion 2002 Tornado watch 557Dec 10, 11:25 PM EST
• Mesoscale Discussion 2004 Severe potential...watch likelyDec 11, 12:08 AM EST
• Mesoscale Discussion 2009 Severe potential...tornado watch likelyDec 11, 2:02 AM EST
• Mesoscale Discussion 2012 Tornado watch 557...560Dec 11, 2:46 AM EST

546 
WWUS20 KWNS 110519
SEL0  
SPC WW 110519
INZ000-KYZ000-OHZ000-111100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 560
NWS Storm Prediction Center Norman OK
1220 AM EST Sat Dec 11 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern and eastern Indiana
  Northern Kentucky
  Western Ohio

* Effective this Saturday morning from 1220 AM until 600 AM EST.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible

SUMMARY...A linear cluster should spread east with mainly a damaging
wind threat. However, a couple tornadoes will be possible with any
embedded supercell/mesovortex, especially towards the Ohio River.

The tornado watch area is approximately along and 55 statute miles
east and west of a line from 45 miles north of Muncie IN to 45 miles
south of Cincinnati OH. 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 554...WW 557...WW
558...WW 559...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 350. Mean
storm motion vector 24040.

...Grams

Tornado Watches in Indiana, 2021Tornado Watches in Ohio, 2021Tornado Watches in Kentucky, 2021Every tornado watch in 2021

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.