Tornado Watch 367

Issued

Jun 29, 2014, 4:04 PM CDT (21:04 UTC)

Expired

Jun 29, 2014, 11:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Omaha radar (KOAX), 13 km from the middle of the area, began a volume at 21:07 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

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1195Jun 29, 2:02 PM CDT
• Mesoscale Discussion 1198Jun 29, 5:14 PM CDT
• Mesoscale Discussion 1199Jun 29, 6:06 PM CDT
• Mesoscale Discussion 1203Jun 29, 9:02 PM CDT
• Mesoscale Discussion 1205Jun 29, 10:10 PM CDT

021 
WWUS20 KWNS 292109
SEL7  
SPC WW 292109
IAZ000-MOZ000-NEZ000-300400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 367
NWS STORM PREDICTION CENTER NORMAN OK
405 PM CDT SUN JUN 29 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  WESTERN AND CENTRAL IOWA
  NORTHERN MISSOURI
  EASTERN NEBRASKA

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
  1100 PM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 3 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST NORTHWEST OF
GRAND ISLAND NEBRASKA TO 25 MILES EAST SOUTHEAST OF DES MOINES
IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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.

&&

DISCUSSION...WDLY SCTD TSTMS EXPECTED TO FORM LATER THIS AFTN AND
EVE WITH CONTINUED HEATING ALONG DIFFUSE W-E BOUNDARY ROUGHLY
PARALLELING INTERSTATE ROUTE 80 OVER ERN NEB/WRN IA. LOW-LVL FLOW
LIKELY WILL REMAIN WEAK GIVEN LINGERING PRESENCE OF E CNTRL KS
MCS/MCV...AND UPR-LVL FORCING FOR ASCENT ESSENTIALLY NEUTRAL. BUT
GIVEN DEGREE OF BUOYANCY /SBCAPE AROUND 4000 J PER KG/...RICH
MOISTURE /PW AOA 1.50 INCHES/...40-50 KT WNWLY DEEP SHEAR...AND
POTENTIAL FOR A FEW DISCRETE SUPERCELLS...A CONDITIONAL RISK FOR
LARGE HAIL...DMGG WIND...AND TORNADOES WILL EXIST.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 28025.


...CORFIDI

Tornado Watches in Iowa, 2014Tornado Watches in Nebraska, 2014Tornado Watches in Missouri, 2014Every tornado watch in 2014

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.