Tornado Watch 683

Issued

Jul 8, 2003, 1:45 PM CDT (18:45 UTC)

Expired

Jul 8, 2003, 7:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Quad Cities radar (KDVN), 72 km from the middle of the area, began a volume at 18:49 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.

• Mesoscale Discussion 1708Jul 8, 12:59 PM CDT
• Mesoscale Discussion 1709Jul 8, 1:21 PM CDT
• Mesoscale Discussion 1715Jul 8, 3:40 PM CDT
• Mesoscale Discussion 1721Jul 8, 6:46 PM CDT

000 
WWUS20 KWNS 081848
SEL3  
SPC WW 081845
IAZ000-ILZ000-MOZ000-LMZ000-090000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 683 
NWS STORM PREDICTION CENTER NORMAN OK 
145 PM CDT TUE JUL 8 2003

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       EASTERN IOWA
       NORTHERN AND CENTRAL ILLINOIS
       EXTREME NORTHEAST MISSOURI
       LAKE MICHIGAN

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 700
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 90 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 35 MILES WEST NORTHWEST OF BURLINGTON IOWA TO
60 MILES NORTHEAST OF CHAMPAIGN ILLINOIS.

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...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 679. WATCH NUMBER 679 WILL NOT BE IN
EFFECT AFTER 145 PM CDT. CONTINUE...WW 680...WW 681...WW 682...


DISCUSSION...BOW ECHO WITH WIND DAMAGE WILL MOVE EWD ACROSS ACROSS
EXTREME SERN IA INTO EXTREME NERN MO AND NRN IL. OTHER SEVERE STORMS
ARE EXPECTED TO BE LOCATED ALONG A BOUNDARY THAT EXTENDS ACROSS NRN
IL. ALTHOUGH THE DEEP LAYER SHEAR IS AROUND 30 KT...STORMS
INTERSECTING THIS BOUNDARY WILL HAVE THE POTENTIAL FOR BRIEF
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 26040.


...IMY

421,0914 415,0872 392,0872 393,0914

Tornado Watches in Illinois, 2003Tornado Watches in Iowa, 2003Tornado Watches in Missouri, 2003Every tornado watch in 2003

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.