Tornado Watch 374

Issued

Jun 30, 2014, 2:03 PM CDT (19:03 UTC)

Expired

Jun 30, 2014, 7:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

75 kt

The Quad Cities radar (KDVN), 46 km from the middle of the area, began a volume at 19:03 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

20%

Ten or more severe wind reports

95%

One or more gusts of 65 knots or more

60%

Ten or more severe hail reports

90%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1212Jun 30, 10:18 AM CDT
• Mesoscale Discussion 1215Jun 30, 1:27 PM CDT
• Mesoscale Discussion 1217Jun 30, 3:25 PM CDT
• Mesoscale Discussion 1220Jun 30, 4:33 PM CDT
• Mesoscale Discussion 1221Jun 30, 5:12 PM CDT
• Mesoscale Discussion 1222Jun 30, 6:08 PM CDT
• Mesoscale Discussion 1223Jun 30, 6:28 PM CDT

275 
WWUS20 KWNS 301907
SEL4  
SPC WW 301907
IAZ000-ILZ000-MOZ000-WIZ000-010000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 374
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT MON JUN 30 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN IOWA
  WESTERN AND NORTHERN ILLINOIS
  NORTHEAST MISSOURI
  SOUTHERN WISCONSIN

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
  700 PM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  WIDESPREAD DAMAGING WINDS EXPECTED WITH ISOLATED SIGNIFICANT
    GUSTS TO 85 MPH LIKELY
  WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL
    EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST SOUTHWEST OF
CEDAR RAPIDS IOWA TO 40 MILES SOUTH SOUTHEAST OF ROCKFORD
ILLINOIS.  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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 373...

DISCUSSION...ORGANIZING CONVECTIVE SYSTEM WITH EMBEDDED SUPERCELLS
IN CNTRL IA EXPECTED TO CONTINUE GENERALLY E INTO IL THROUGH LATE
AFTN. ADDITIONAL DEVELOPMENT MAY OCCUR BOTH ON THE NRN AND SRN
FLANKS OF THE SQLN...WITH SOME POTENTIAL FOR REAR-INFLOW JET
DEVELOPMENT AND ASSOCIATED EVOLUTION INTO A DERECHO-PRODUCING MCS.
QUALITY OF MOISTURE INFLOW...STRENGTH OF WSWLY DEEP SHEAR...AND
PRESENCE OF EXISTING EMBEDDED CIRCULATIONS SUGGEST POTENTIAL FOR
OCCASIONAL TORNADOES...IN ADDITION TO INCREASINGLY BROAD SWATHS OF
DMGG WIND/HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 75 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 28045.


...CORFIDI

Tornado Watches in Illinois, 2014Tornado Watches in Iowa, 2014Tornado Watches in Wisconsin, 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.