Heat, Allegany
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Allegany forecast zone
Heat in Maryland, January 6 to 9, 1998
A sprawling area of high atmospheric pressure became anchored over the western Atlantic for several days. Circulation around the high brought an unencumbered flow of tropical air from the Caribbean region into all of Maryland for a 2 1/2 day period beginning around dawn on the 6th and continuing until around noon on the 9th.
Where it happened
Every event with a place to put it; 10 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 14
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 LWX wrote it up.
A sprawling area of high atmospheric pressure became anchored over the western Atlantic for several days. Circulation around the high brought an unencumbered flow of tropical air from the Caribbean region into all of Maryland for a 2 1/2 day period beginning around dawn on the 6th and continuing until around noon on the 9th. A new record high temperature was set at Hagerstown (MDZ003) on the 8th; the record was tied on the 6th. More interestingly, temperatures remained above 55 degrees for over 48 hours, spanning two mornings when the normal low temperatures were some 35 degrees colder!After nine days, the mean temperatures across central and western Maryland were between 15 and 20 degrees above normal - more like April than early January.
The radar
The national radar mosaic for the moment the first event began.
Event by event
14 heat. Local standard time, as filed.
Heat, Washington
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Washington forecast zone
- Coordinates
- 39.604, -77.814 (the zone’s center; the record gives no point)
Heat, Frederick
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Frederick forecast zone
- Coordinates
- 39.472, -77.398 (the zone’s center; the record gives no point)
Heat, Carroll
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Carroll forecast zone
- Coordinates
- 39.563, -77.022 (the zone’s center; the record gives no point)
Heat, Northern Baltimore
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Northern Baltimore forecast zone
- Coordinates
- 39.443, -76.616 (the zone’s center; the record gives no point)
Heat, Harford
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Harford forecast zone
Heat, Montgomery
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Montgomery forecast zone
Heat, Howard
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Howard forecast zone
Heat, Southern Baltimore
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Southern Baltimore forecast zone
- Coordinates
- 39.367, -76.614 (the zone’s center; the record gives no point)
Heat, Prince Georges
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Prince Georges forecast zone
- Coordinates
- 38.830, -76.847 (the zone’s center; the record gives no point)
Heat, Anne Arundel
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Anne Arundel forecast zone
- Coordinates
- 38.994, -76.568 (the zone’s center; the record gives no point)
Heat, Charles
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Charles forecast zone
- Coordinates
- 38.474, -77.013 (the zone’s center; the record gives no point)
Heat, St. Mary'S
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- St. Mary'S forecast zone
- Coordinates
- 38.216, -76.529 (the zone’s center; the record gives no point)
Heat, Calvert
- When
- January 6, 7:00 AM EST to January 9, 12:00 PM EST
- Where
- Calvert forecast zone
- Coordinates
- 38.535, -76.531 (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
- Ice Storm in New York, January 6 to 9, 1998
- Ice Storm in Vermont, January 6 to 9, 1998
- Hail in Texas, January 6, 1998
- Hail in Texas, January 6, 1998
- Ice Storm in Vermont, January 6 to 9, 1998
- Flash Flooding in Texas, January 6, 1998
- Flooding in New York, January 6 to 12, 1998
- Flash Flooding and Flooding in Louisiana, January 6 to 7, 1998
- Hail in Texas, January 6, 1998
- Flash Flooding and Hail in Texas, January 6 to 7, 1998
- Winter Weather in New York, January 6 to 9, 1998
- Flash Flooding and Flood in Mississippi, January 6 to 7, 1998
More
Every storm in Maryland in 1998Every state in 1998This day in weather historyWarnings in Maryland, January 1998
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: 5627918, 5627919, 5627920, 5628017, 5628018, 5628019, 5628020, 5628021, 5628022, 5628023, 5628024, 5628025, 5628026, 5628027.