Tornado Watch 286

Issued

Jun 22, 2016, 6:11 PM CDT (23:11 UTC)

Expired

Jun 23, 2016, 1:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

70 kt

The Quad Cities radar (KDVN), 54 km from the middle of the area, began a volume at 23:14 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

30%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

50%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1020Jun 22, 3:38 PM CDT
• Mesoscale Discussion 1024Jun 22, 8:53 PM CDT
• Mesoscale Discussion 1026Jun 22, 11:51 PM CDT

446 
WWUS20 KWNS 222308
SEL6  
SPC WW 222308
IAZ000-ILZ000-INZ000-LMZ000-230600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 286
NWS STORM PREDICTION CENTER NORMAN OK
610 PM CDT WED JUN 22 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN IOWA
  NORTHERN AND CENTRAL ILLINOIS
  NORTHWESTERN INDIANA
  LAKE MICHIGAN

* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 610 PM
  UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE
  WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
    TO 80 MPH POSSIBLE
  ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER
    POSSIBLE

SUMMARY...GRADUALLY DEEPENING CONVECTION NOW ON EITHER SIDE OF THE
MISSISSIPPI RIVER IS EXPECTED TO EVOLVE INTO SUPERCELLS THREATENING
EVERY FORM OF SEVERE WEATHER...THEN AFTER A FEW HOURS...INTO A
COMPLEX OF STORMS WITH MOSTLY A DAMAGING-WIND RISK.  AN
ORGANIZED...DERECHO-PRODUCING SYSTEM ULTIMATELY MAY DEVELOP FROM
THIS ACTIVITY TONIGHT.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EITHER SIDE OF A LINE FROM 15 MILES WEST OF CEDAR RAPIDS
IOWA TO 30 MILES SOUTH OF VALPARAISO INDIANA.  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 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 29035.


...EDWARDS

Tornado Watches in Illinois, 2016Tornado Watches in Iowa, 2016Tornado Watches in Indiana, 2016Every tornado watch in 2016

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.