Tornado Watch 116

Issued

Apr 27, 2016, 2:33 PM CDT (19:33 UTC)

Expired

Apr 27, 2016, 10:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Des Moines radar (KDMX), 166 km from the middle of the area, began a volume at 19:35 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

30%

One or more gusts of 65 knots or more

5%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 475Apr 27, 1:58 PM CDT
• Mesoscale Discussion 477Apr 27, 5:34 PM CDT
• Mesoscale Discussion 479Apr 27, 8:06 PM CDT

560 
WWUS20 KWNS 271931
SEL6  
SPC WW 271931
IAZ000-ILZ000-KSZ000-MOZ000-280200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 116
NWS STORM PREDICTION CENTER NORMAN OK
230 PM CDT WED APR 27 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHWEST AND SOUTH CENTRAL IOWA
  WEST CENTRAL ILLINOIS
  FAR NORTHEAST KANSAS
  NORTHERN MISSOURI

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 230 PM
  UNTIL 900 PM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER LIKELY
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...THUNDERSTORMS EXPECTED TO INCREASE IN COVERAGE AND
STRENGTH NEAR SLOWLY MOVING WARM FRONT ACROSS NORTHERN
MISSOURI/SOUTHWEST IOWA...WHERE LOW-LEVEL VEERING WIND PROFILES AND
SUBSTANTIAL SURFACE HEATING COULD SUPPORT DEVELOPMENT OF LOW-LEVEL
MESOCYCLONES AND TORNADOES....IN ADDITION TO SEVERE HAIL.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST OF SHENANDOAH
IOWA TO 65 MILES SOUTH SOUTHEAST OF QUINCY ILLINOIS.  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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 115...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 23030.


...CORFIDI

Tornado Watches in Missouri, 2016Tornado Watches in Iowa, 2016Tornado Watches in Illinois, 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.