Bermuda high pressure brought a southwest flow of hot and humid air to Massachusetts during the holiday weekend. The temperature only fell to a low of 81 degrees at Logan International Airport in Boston on July 5th, which was a record minimum high temperature for the date.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOX wrote it up.
Bermuda high pressure brought a southwest flow of hot and humid air to Massachusetts during the holiday weekend. The temperature only fell to a low of 81 degrees at Logan International Airport in Boston on July 5th, which was a record minimum high temperature for the date. The previous record was 79 degrees which was set in 1919. Although the high temperature of 98 degrees on the 5th did not break a record in Boston, the spell of heat and high humidity resulted in two deaths and record electricity usage in Boston. An 86-year old woman died from heat exhaustion after being rushed to the hospital from a private nursing home, and a 64-year old woman, also a resident of a Boston nursing home, died of similar causes later that day.
The national radar mosaic for the moment the first event began.
1 heat. Local standard time, as filed.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heat, Suffolk / Also Part of Norfolk | 1999-07-05 | 86 | Female | Permanent Home | Direct |
| Heat, Suffolk / Also Part of Norfolk | 1999-07-05 | 64 | Female | Permanent Home | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Massachusetts in 1999Every state in 1999This day in weather historyWarnings in Massachusetts, July 1999
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5710648.