Tornado Watch 349

Issued

Jun 24, 2015, 6:21 PM CDT (23:21 UTC)

Expired

Jun 24, 2015, 11:26 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Omaha radar (KOAX), 111 km from the middle of the area, began a volume at 23:23 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

10%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1157Jun 24, 2:23 PM CDT
• Mesoscale Discussion 1162Jun 24, 5:58 PM CDT
• Mesoscale Discussion 1164Jun 24, 7:49 PM CDT
• Mesoscale Discussion 1166Jun 24, 10:00 PM CDT

915 
WWUS20 KWNS 242319
SEL9  
SPC WW 242319
IAZ000-NEZ000-250700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 349
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT WED JUN 24 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  MUCH OF WESTERN AND CENTRAL IOWA
  PARTS OF EASTERN NEBRASKA

* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 620 PM
  UNTIL 200 AM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
    INCHES IN DIAMETER POSSIBLE

SUMMARY...RAPID THUNDERSTORM DEVELOPMENT IS NOW UNDERWAY...WITH
FURTHER INTENSIFICATION LIKELY WHILE SPREADING WEST TO EAST ACROSS
THE WATCH AREA THROUGH THE EVENING HOURS.  STRONGER STORMS MAY
BECOME CAPABLE OF PRODUCING TORNADOES...BEFORE ACTIVITY CONSOLIDATES
INTO AN EVOLVING THUNDERSTORM CLUSTER...WITH POTENTIALLY DAMAGING
WIND GUSTS BECOMING THE MORE PROMINENT THREAT LATER THIS EVENING
INTO THE OVERNIGHT HOURS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST SOUTHWEST OF
TEKAMAH NEBRASKA TO 40 MILES EAST NORTHEAST OF KNOXVILLE IOWA. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).

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 348...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 29030.


...KERR

Tornado Watches in Iowa, 2015Tornado Watches in Nebraska, 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.