Severe Thunderstorm Warning 15, NWS Jacksonville, FL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
243 PM EDT THU JUL 23 1987

...OZONE ADVISORY IN EFFECT FOR JACKSONVILLE UNTIL 500 PM EDT...

DR. PATRICIA C. COWDERY...DIRECTOR OF THE DEPARTMENT OF HEALTH...
WELFARE...AND BIO ENVIRONMENTAL SERVICES HAS ISSUED AN OZONE ADVISORY
FOR JACKSONVILLE. AT 200 PM EDT THE AIR QUALITY INDEX READING WAS
134 WHICH IS IN THE UNHEALTHFUL CATEGORY.

PERSONS WITH EXISTING HEART OR RESPIRATORY AILMENTS SHOULD REDUCE
PHYSICAL EXERCISE AND OUTDOOR ACTIVITY. MOTORISTS SHOULD REFRAIN
FROM UNNECESSARY DRIVING.

AGAIN...THE OZONE ADVISORY FOR UNHEALTHFUL CONDITIONS IS IN EFFECT
UNTIL 5 PM EDT.

...ALSO VERY HOT OVER NORTHEAST FLORIDA...

AT 155 PM EDT THE TEMPERATURE AT JACKSONVILLE INTERNATIONAL AIRPORT
REACHED 99 DEGREES...TYING THE RECORD FOR THIS DATE SET IN 1952.

THE COMBINATION OF 99 DEGREE HEAT WITH A RELATIVE HUMIDITY OF 42
PERCENT GIVES A HEAT INDEX TEMPERATURE OF 110 DEGREES. THIS IS IN
THE VERY HOT CATEGORY. IF WORKING OUTDOORS SUNSTROKE...HEAT CRAMPS...
OR HEAT EXHAUSTION IS LIKELY...AND HEATSTROKE POSSIBLE WITH PROLONGED
EXPOSURE AND/OR PHYSICAL ACTIVITY.

IF POSSIBLE GET RELIEF IN AN AIRCONDITIONED BUILDING OR WITH THE
USE OF FANS AND SHADE. A CHECK SHOULD BE MADE ON THE ELDERLY...
THE VERY YOUNG...AND THOSE WITH HEART OR RESPIRATORY AILMENTS...
ESPECIALLY THOSE LIVING IN A NON AIRCONDITIONED RESIDENCE.