Tornado Watch 534

Issued

Nov 11, 2015, 11:25 AM CST (17:25 UTC)

Expired

Nov 11, 2015, 5:41 PM CST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Des Moines radar (KDMX), 104 km from the middle of the area, began a volume at 17:25 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

60%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 1937Nov 11, 10:17 AM CST
• Mesoscale Discussion 1938Nov 11, 12:38 PM CST
• Mesoscale Discussion 1939Nov 11, 1:42 PM CST

508 
WWUS20 KWNS 111723
SEL4  
SPC WW 111723
IAZ000-KSZ000-MOZ000-NEZ000-120000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 534
NWS STORM PREDICTION CENTER NORMAN OK
1120 AM CST WED NOV 11 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHWEST AND CENTRAL IOWA
  EXTREME NORTHEAST KANSAS
  NORTHWEST AND NORTH CENTRAL MISSOURI
  EXTREME SOUTHEAST NEBRASKA

* EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1120 AM UNTIL
  600 PM CST.

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

SUMMARY...THUNDERSTORMS WILL DEVELOP EARLY THIS AFTERNOON ACROSS
SOUTHEAST NEBRASKA/NORTHEAST KANSAS AND SPREAD QUICKLY EASTWARD INTO
SOUTHWEST IOWA AND NORTHWEST MISSOURI.  A FEW TORNADOES WILL BE
POSSIBLE WITH SUPERCELLS THIS AFTERNOON...WHILE THE THREAT FOR
DAMAGING WIND GUSTS WILL GRADUALLY INCREASE LATER AND FARTHER EAST
AS STORMS MERGE INTO MORE OF A LINE.  ISOLATED LARGE HAIL WILL ALSO
BE POSSIBLE WITH THE STRONGEST STORMS THIS AFTERNOON.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES EAST NORTHEAST OF
DENISON IOWA TO 50 MILES SOUTH SOUTHWEST OF CHILLICOTHE MISSOURI.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).

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 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 24045.


...THOMPSON

Tornado Watches in Iowa, 2015Tornado Watches in Missouri, 2015Tornado Watches in Kansas, 2015Every tornado watch in 2015

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.