Severe Thunderstorm Warning 172, NWS Des Moines, IA

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-182100-

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
510 AM CDT THU JUN 18 1998

HAZARD--SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL OF 2 TO 3
INCHES IN A FEW LOCATIONS...LARGE HAIL AND WIND GUSTS TO 60 MPH.

TIMING AND AREA OF CONCERN--THIS MORNING ALONG AND EAST OF A LINE
FROM FOREST CITY...TO WEBSTER CITY...TO DES MOINES...TO CRESTON.
THIS AFTERNOON OVER ALL OF CENTRAL AND EASTERN IOWA.

METEOROLOGICAL COMMENTS--EARLY THIS MORNING...A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM NORTH-CENTRAL IOWA THROUGH CENTRAL IOWA
INTO SOUTHEAST IOWA WAS MOVING NORTHEAST AROUND 35 MPH.  THIS LINE
WILL BE CAPABLE OF PRODUCING DOWNBURST WINDS TO 70 MPH...HAIL TO ONE
INCH IN DIAMETER AND VERY HEAVY RAIN IN LOCALIZED AREAS.  ADDITIONAL
THUNDERSTORM REDEVELOPMENT IS LIKELY THIS AFTERNOON AS A COLD FRONT
OVER CENTRAL NEBRASKA MOVES INTO IOWA.  ABUNDANT LOW LEVEL MOISTURE
WILL STILL BE IN PLACE FOR THUNDERSTORM DEVELOPMENT.  ADDITIONALLY...
RIVERS CONTINUE TO RUN HIGH OVER THE STATE AND THE GROUND IS NEARLY
SATURATED.  SO ALTHOUGH THE STORMS SHOULD MOVE QUICKLY TO THE EAST
THIS MORNING AND AFTERNOON...LOCALIZED HEAVY RAINS COULD CAUSE STREET
FLOODING...SMALL STREAMS AND DITCHES WILL QUICKLY RISE SINCE COPIOUS
QUANTITIES OF WATER HAVE RECENTLY FALLEN OVER IOWA.  A FLASH FLOOD
WATCH REMAINS IN EFFECT FOR ALL OF CENTRAL AND EASTERN IOWA TODAY.

PRECAUTIONS--SPOTTER ACTIVATION MAY BE REQUIRED LATER THIS MORNING
AND AFTERNOON TO REPORT WIND SPEEDS...HAIL SIZE...AND RAINFALL
AMOUNTS.  A FLASH FLOOD WATCH MEANS RAPIDLY RISING WATER OR FLOODING
IS POSSIBLE WITHIN THE WATCH AREA.  IF YOU ARE IN THE WATCH
AREA...CHECK PREPAREDNESS REQUIREMENTS...KEEP INFORMED...AND BE READY
FOR QUICK ACTION IF FLASH FLOODING IS OBSERVED OR IF A WARNING IS
ISSUED.

SEARCY

IAZ044-181125-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
521 AM CDT THU JUN 18 1998

...SEVERE THUNDERSTORM WATCH 602 HAS BEEN CANCELLED...

SEVERE WEATHER WAS NO LONGER EXPECTED OVER WESTERN IOWA THROUGH 600
AM.  THEREFORE THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT
UNTIL 600 AM HAS BEEN CANCELLED.

HOWEVER...ADDITIONAL THUNDERSTORMS WILL LIKELY REDEVELOP LATER
TODAY AHEAD OF AN EASTWARD MOVING COLD FRONT THAT IS OVER CENTRAL
AND EASTERN NEBRASKA EARLY THIS MORNING.

ADDITIONALLY...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR OF CENTRAL
AND EASTERN IOWA...INCLUDING CRAWFORD COUNTY.

KEEP AN EYE TO THE SKY TODAY AS THE WEATHER COULD BECOME ACTIVE
ONCE AGAIN.

SEARCY

IAZ016-017-025-026-036-037-048-181234-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
534 AM CDT THU JUN 18 1998

DOPPLER RADAR IS INDICATING AN AREA OF STRONG WINDS FROM NORTH OF
AMES TOWARDS MASON CITY ASSOCIATED WITH A LINE OF THUNDERSTORMS.
WIND GUSTS COULD REACH JUST BELOW SEVERE LIMITS...WITH GUSTS TO 50
MPH POSSIBLE. THE STRONG WINDS WILL PUSH TOWARDS A CHARLES CITY TO
WATERLOO LINE OVER THE NEXT HOUR.

MYERS

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-182200-

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
931 AM CDT THU JUN 18 1998

HAZARD--SEVERE THUNDERSTORMS WITH HAIL 1 INCH OR LARGER...
HEAVY RAINS AND DAMAGING WINDS.  AN ISOLATED TORNADO IS ALSO
POSSIBLE.

AREA OF CONCERN AND TIMING DETAILS--

THROUGH NOON--ALONG AND EAST OF A FORT DODGE-ATLANTIC LINE.
NOON TO 800 PM--MAINLY SOUTHEAST OF A FORT DODGE--CRESTON LINE.

METEOROLOGICAL COMMENTS--A COLD FRONT WILL BE THE FOCUS OF
THUNDERSTORM DEVELOPMENT THROUGH THE DAY.  AT 900 AM...THE
FRONT WAS LOCATED FROM NEAR SIOUX CITY TO JUST SOUTH OF OMAHA
INTO SOUTH CENTRAL KANSAS.  A WARM FRONT LOCATED NEAR I-80 WILL
ALSO MOVE NORTH TODAY PROVIDING ANOTHER FOCUS FOR CONVERGENCE.
WARM...UNSTABLE AND VERY MOIST AIR SOUTH OF THIS FRONT AND IS
EXPECTED TO PROVIDE PLENTY OF BUOYANCY FOR STRONG UPDRAFTS FOR
SEVERE THUNDERSTORMS TODAY.  A 100 KNOT SOUTHWESTERLY JET STREAM
WILL BE PUSHING NORTHEAST FROM THE TEXAS PANHANDLE TODAY
INTERSECTING 40 KNOT SOUTHERLY FLOW IN THE LOWEST 5000 FEET.  THIS
WILL CREATE FAVORABLE SHEAR FOR THE MAINTENANCE OF ROTATING
UPDRAFTS AND SEVERE STORMS.  ISOLATED SUPERCELLS ARE POSSIBLE...BUT
AT THIS TIME A SQUALL LINE IS EXPECTED TO FORM EVENTUALLY ALONG THE
COLD FRONT THIS AFTERNOON...SPREADING EASTWARD TOWARD EVENING.

PRECAUTIONS--EMERGENCY MANAGEMENT SHOULD PAY CLOSE ATTENTION TO
SHORT TERM FORECASTS AND FURTHER STATEMENTS TODAY.  SEVERE WEATHER
WATCHES MAY BE ISSUED LATER THIS MORNING OR EARLY AFTERNOON. SPOTTER
ACTIVATION WILL BE REQUIRED IN SEVERAL LOCATIONS. REPORT RAINFALL
AMOUNTS TO THE NATIONAL WEATHER SERVICE IF AVAILABLE.  A FLASH FLOOD
WATCH IS IN EFFECT TODAY.

KULA

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-182200-

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
931 AM CDT THU JUN 18 1998

HAZARD--SEVERE THUNDERSTORMS WITH HAIL 1 INCH OR LARGER...
HEAVY RAINS AND DAMAGING WINDS.  AN ISOLATED TORNADO IS ALSO
POSSIBLE.

AREA OF CONCERN AND TIMING DETAILS--

THROUGH NOON--ALONG AND EAST OF A FORT DODGE-ATLANTIC LINE.
NOON TO 800 PM--MAINLY SOUTHEAST OF A FORT DODGE--CRESTON LINE.

METEOROLOGICAL COMMENTS--A COLD FRONT WILL BE THE FOCUS OF
THUNDERSTORM DEVELOPMENT THROUGH THE DAY.  AT 900 AM...THE
FRONT WAS LOCATED FROM NEAR SIOUX CITY TO JUST SOUTH OF OMAHA
INTO SOUTH CENTRAL KANSAS.  A WARM FRONT LOCATED NEAR I-80 WILL
ALSO MOVE NORTH TODAY PROVIDING ANOTHER FOCUS FOR CONVERGENCE.
WARM...UNSTABLE AND VERY MOIST AIR SOUTH OF THIS FRONT AND IS
EXPECTED TO PROVIDE PLENTY OF BUOYANCY FOR STRONG UPDRAFTS FOR
SEVERE THUNDERSTORMS TODAY.  A 100 KNOT SOUTHWESTERLY JET STREAM
WILL BE PUSHING NORTHEAST FROM THE TEXAS PANHANDLE TODAY
INTERSECTING 40 KNOT SOUTHERLY FLOW IN THE LOWEST 5000 FEET.  THIS
WILL CREATE FAVORABLE SHEAR FOR THE MAINTENANCE OF ROTATING
UPDRAFTS AND SEVERE STORMS.  ISOLATED SUPERCELLS ARE POSSIBLE...BUT
AT THIS TIME A SQUALL LINE IS EXPECTED TO FORM EVENTUALLY ALONG THE
COLD FRONT THIS AFTERNOON...SPREADING EASTWARD TOWARD EVENING.

PRECAUTIONS--EMERGENCY MANAGEMENT SHOULD PAY CLOSE ATTENTION TO
SHORT TERM FORECASTS AND FURTHER STATEMENTS TODAY.  SEVERE WEATHER
WATCHES MAY BE ISSUED LATER THIS MORNING OR EARLY AFTERNOON. SPOTTER
ACTIVATION WILL BE REQUIRED IN SEVERAL LOCATIONS. REPORT RAINFALL
AMOUNTS TO THE NATIONAL WEATHER SERVICE IF AVAILABLE.  A FLASH FLOOD
WATCH IS IN EFFECT TODAY.

KULA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
957 AM CDT THU JUN 18 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0800 AM    CORYDON                   IA   WIND DAMAGE
06/18/98   WAYNE                          UTILITY POLES AND TREES
                                          DOWN, STRONG WINDS