Severe Thunderstorm Warning 91, NWS Des Moines, IA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
110 PM CDT SAT JUL 11 1987

THE COMBINATION OF TEMPERATURE AND RELATIVE HUMIDITY HAS DRIVEN
THE HEAT INDEX INTO THE HOT CATEGORY.

THE HOT CATEGORY MEANS THAT HEAT EXHAUSTION...HEAT CRAMPS AND
SUNSTROKE ARE POSSIBLE WITH PROLONGED EXPOSURE OR PHYSICAL
EXERTION.

PEOPLE PLANNING LENGTHY OUTDOOR ACTIVITIES THIS AFTERNOON SHOULD
TAKE EXTRA PRECAUTIONS AND MONITOR PHYSICAL CONDITIONS. PEOPLE
SHOULD WEAR LIGHT WEIGHT LOOSE FITTING CLOTHING AND HAVE PLENTY
OF NON-ALCHOLIC BEVERAGES ON HAND.

A RESPITE FROM THE EXTREME HEAT AND HUMIDITY IS EXPECTED OVER THE
NEXT 24 HOURS AS A COLD FRONT WILL BE MOVING THROUGH THE STATE
THIS ,EVENING BRINGING COOLER TEMPERATURES AND LOWER RELATIVE
HUMIDITY.

BARLOW

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
314 PM CDT SAT JUL 11 1987

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF WESTERN
AND NORTHERN IOWA UNTIL 9PM THIS EVENING...

AT 310 PM...A 20 MILE WIDE BAND OF SHOWERS AND ISOLATED INTENSE
THUNDERSTORMS WAS LOCATED OVER THE FAR NORTHWEST COUNTIES OF IOWA.

THE STRONGEST STORMS WERE LOCATED ABOUT 25 MILES NORTHWEST OF SPENCER
IN EXTREME NORTHEAST OSCEOLA COUNTY...THE OTHER STORM WAS LOCATED
40 MILES NORTHWEST OF SPENCER IN THE EXTREME SOUTHEAST CORNER OF
LYON COUNTY.

ALTHOUGH THESE STORMS DO NOT APPEAR TO BE SEVERE AT THIS TIME...VERY
HEAVY RAIN...STRONG GUSTY WINDS ALONG WITH SMALL HAIL AND DANGEROUS
LIGHTNING CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS.

PEOPLE ON OR AROUND AREA LAKES IN EXTREME NORTHWEST IOWA SHOULD BE
PREPARED TO MOVE QUICKLY TO A PLACE OF SHELTER IF THESE STORMS
APPROACH.

MOVEMENT OF THE SHOWERS AND STORMS WAS EAST NORTHEAST AT 40 MILES
AN HOUR.

BARLOW/MILLER