Maryland, 1999

Heat in Maryland, June 7 to 9, 1999

June 7 to 9, 1999 · NWS PHI · 5 events in 5 counties and zones

A large high pressure system over the southeastern United States pumped in a hot and humid air mass across the Delmarva Peninsula for three days. The hottest day was the 8th.

Where it happened

Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
5
Property damage
None recorded
Crop damage
None recorded
Events
5

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.

What happened

The episode as NWS PHI wrote it up.

A large high pressure system over the southeastern United States pumped in a hot and humid air mass across the Delmarva Peninsula for three days. The hottest day was the 8th. A weak trough brought in slightly cooler and considerably drier air on the 9th, although high temperatures still reached around 90 degrees. A stronger backdoor cold front (it moved from north to south) brought in considerably cooler air into the region the evening of the 9th. The high temperature in Easton reached 95 degrees on the 7th and 98 degrees on the 8th, both making new daily high temperature records for the cooperative observation station. Highest temperatures reached during this hot spell included 98 degrees in Salisbury and 97 degrees at the Baltimore-Washington International Airport.Some students became ill in Caroline County schools on the 7th. Authorities believed it was heat related. Students were dismissed early on the 8th in all schools that did not have air conditioning. Talbot County school districts cancelled all planned outdoor activities for the 8th.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

5 heat. Local standard time, as filed.

Heat, Caroline

When
June 7, 9:00 AM EST to June 9, 7:00 PM EST
Where
Caroline forecast zone
Injuries
5 direct, 0 indirect
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
38.872, -75.832 (the zone’s center; the record gives no point)

Heat, Cecil

When
June 7, 9:00 AM EST to June 9, 7:00 PM EST
Where
Cecil forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
39.562, -75.948 (the zone’s center; the record gives no point)

Heat, Kent

When
June 7, 9:00 AM EST to June 9, 7:00 PM EST
Where
Kent forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
39.236, -76.096 (the zone’s center; the record gives no point)

Heat, Queen Annes

When
June 7, 9:00 AM EST to June 9, 7:00 PM EST
Where
Queen Annes forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
39.038, -76.085 (the zone’s center; the record gives no point)

Heat, Talbot

When
June 7, 9:00 AM EST to June 9, 7:00 PM EST
Where
Talbot forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
38.749, -76.179 (the zone’s center; the record gives no point)

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 1999Every state in 1999This day in weather historyWarnings in Maryland, June 1999

Sources

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 2026-10-01. Each event’s entry at NCEI: 5703512, 5703513, 5703514, 5703515, 5703516.