Severe Thunderstorm Warning 95, NWS Des Moines, IA

IAZ002-003-007-311630-

SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE WATERLOO IA
1050 AM CDT FRI MAY 31 1991

AT 1050 AM CDT TWO LINES OF SHOWERS AND THUNDERSTORMS WERE
LOCATED IN NORTHEAST IOWA...THE FIRST WAS LOCATED FROM NEAR
PRARIE DU CHEIN WISCONSIN 30 MILES SOUTH OF LACROSS TO CEDAR
RAPIDS IOWA...THE SECOND WAS LOCATED FROM CLARKSVILLE...20 MILES
NORTHWEST OF WATERLOO TO ELDORA...35 MILES SOUTHWEST OF WATERLOO.
THESE THUNDERSTORM LINES WERE MOVING EAST AT 35 MILES AN HOUR.
THESE THUNDERSTORMS WERE PRODUCING BRIEF HEAVY RAIN...1.31 INCHES
AT WATERLOO...1.53 AT WELLSBURG...1.75 IN SOUTHERN FRANKLIN COUNTY.
FREQUENT LIGHTNING ALSO ACCOMPANIED THE THUNDERSTORMS WITH EVEN
SOME HAIL REPORTED AT 3/4 INCH.

FOR THE REMAINDER OF THE MORNING NORTHEAST IOWA CAN EXPECT SHOWERS
AND THUNDERSTORMS AT TIMES WITH TEMPERATURES IN THE MIDDLE 70S TO
NEAR 80 DEGREES.  THE WINDS WILL BE SOUTH 5 TO 10 MILES AN HOUR...
HOWEVER THEY WILL BE STRONG AND GUSTY NEAR THUNDERSTORMS.

IAZ002-003-007-311730-

SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE WATERLOO IA
1135 AM CDT FRI MAY 31 1991

AT 1135 AM CDT WEATHER RADAR SHOWED A 40 MILE WIDE AREA OF SHOWERS AND
THUNDERSTORMS LOCATED FROM THE IOWA/MINNESOTA BORDER SOUTH OF ROCHESTER
MINNESOTA TO HUDSON...10 MILES SOUTH OF WATERLOO IOWA.  THE STRONGEST OF
THESE STORMS WERE LOCATED NEAR REINBECK WHICH IS 15 MILES SOUTHWEST OF
WATERLOO AND 10 MILES EAST OF WAVERLY OR 15 MILES NORTHEAST OF WATERLOO.
BOTH OF THESE STORMS WERE MOVING TO THE EAST AT 20 MILES AN HOUR.  THESE
STORMS WERE PRODUCING VERY HEAVY RAINS...AND FREQUENT LIGHTNING.

FOR THE REMAINDER OF THE MORNING NORTHEAST IOWA CAN EXPECT SHOWERS
AND THUNDERSTORMS AT TIMES WITH TEMPERATURES IN THE MIDDLE 70S TO
NEAR 80 DEGREES.  THE WINDS WILL BE SOUTH 5 TO 10 MILES AN HOUR...
HOWEVER THEY WILL BE STRONG AND GUSTY NEAR THUNDERSTORMS.

TS

IAZALL-311745-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
1145 AM CDT FRI MAY 31 1991

...SEVERE THUNDERSTORM WATCH FOR A SMALL PART OF EASTERN IOWA UNTIL
5 PM...

AT 1135 AM CDT...INTENSE THUNDERSTORMS WERE LOCATED OVER NORTHEAST
AND CENTRAL IOWA.  THE MOST INTENSE STORMS WERE LOCATED OVER GRUNDY
CENTER...OR 25 MILES SOUTHWEST OF WATERLOO...AND OVER MARSHALLTOWN...
OR 55 MILES NORTHEAST OF DES MOINES.  OTHER INTENSE STORMS WERE IN A
10 MILE WIDE BAND FROM GUTHRIE CENTER SOUTH TO GREENFIELD...ABOUT 50
MILES EAST OF DES MOINES.  THESE STORMS WERE PRODUCING VERY HEAVY RAIN
AND SMALL HAIL.

THESE STORMS WERE PART OF AN AREA OF SCATTERED SHOWERS AND THU/NDERSTORMS
OVER THE NORTHEAST THIRD AND AN AREA OF WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS OVER WEST CENTRAL AND CENTRAL IOWA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES
AN HOUR.

BARLOW/RICHTER

IAZ010-311815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1218 PM CDT FRI MAY 31 1991

...INTENSE THUNDERSTORMS DEVELOPING IN CENTRAL IOWA...

AT 1215 PM...WEATHER RADAR INDICATED RAPID THUNDERSTORM DEVELOPMENT
ABOUT 25 MILES WEST OF DES MOINES...IN DALLAS COUNTY.

WHILE THE STORM DID NOT APPEAR TO BE SEVERE...IT WAS PRODUCING EXTREMELY
HEAVY RAINS...ALONG WITH SOME SMALL HAIL.

THE STORM WAS MOVING EAST-NORTHEAST AT P20 TO 30 MILES AN HOUR...AND WILL
BE MOVING ACROSS DALLAS AND POLK COUNTIES...AND THE CITY OF DES
MOINES...BETWEEN 1215 AND 115 PM THIS AFTERNOON.

BARLOW/TRUETT

IAZ011-311900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1230 PM CDT FRI MAY 31 1991

...HEAVY RAINS FALLING OVER PARTS OF EAST CENTRAL IOWA...

AT 1230 PM...SCATTERED THUNDERSTORMS CONTINUED TO TRAIN OVER PARTS OF
EAST CENTRAL IOWA.  THESE STORMS WILL CONTINUED TO PRODUCE BRIEF HEAVY
RAINS...AND MAYBE SOME SMALL HAIL.

PERSONS LIVING IN LOW LYING AREAS AND NEAR SMALL CREEKS AND STREAMS SHOU
MONTIOR THE LATEST STATEMEN^TS.

THE SOUTHERN EDGE OF THE RAINBAND EXTENDED FROM MARSHALLTOWN...TO BELLE
PLAINS TO CEDAR RAPIDS.

JM

IAZ002-003-007-311830-

SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE WATERLOO IA
1230 PM CDT FRI MAY 31 1991

AT 1230 PM CDT WEATHER RADAR SHOWED A 50 MILE WIDE AREA OF SHOWERS AND
THUNDERSTORMS LOCATED FROM THE IOWA/MINNESOTA BORDER SOUTH OF LACROSS
WISCONSIN TO TAMA...35 MILES SOUTH OF WATERLOO.  THESE SHOWERS AND
THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WERE PRODUCING
SOME LOCALLY HEAVY RAINS AND FREQUENT LIGHTNING STRIKES.

THE SHOWERS AND THUNDERSTORMS SHOULD MOVE OUT OF NORTHEAST IOWA THIS
AFTERNOON AROUND 2 PM CDT...HOWEVER CONDITIONS ARE SET UP FOR MORE
RAINFALL DEVELOPMENT LATER THIS AFTERNOON.  TEMPERATURES OVER NORTHEAST
IOWA SHOULD CLIMaB INTO THE 80S WITH VARIABLE WINDS DUE TO THE SHOWER
ACTIVITY OF 10 TO 15 MILES AN HOUR.