Maryland, 2018

Heat in Maryland, July 1, 2018

July 1, 2018 · NWS LWX · 2 events in 2 counties and zones

An upper-level high along with surface high over the western Atlantic led to hot and humid conditions.

Where it happened

Every event with a place to put it; 2 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

An upper-level high along with surface high over the western Atlantic led to hot and humid conditions.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Jul 1, 8:35 AM EST, 2 hours 25 minutes earlier.

Area forecast discussion, Jul 1, 8:35 AM EST, 2 hours 25 minutes before
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Hazardous weather outlook, Jul 1, 6:11 AM EST, 4 hours 49 minutes before
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The radar

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

Open the radar archive at this moment

Event by event

2 heat. Local standard time, as filed.

Heat, Washington

When
July 1, 11:00 AM EST to 4:00 PM EST
Where
Washington forecast zone
Reported by
ASOS
Coordinates
39.604, -77.814 (the zone’s center; the record gives no point)

Heat indices around 100 degrees were reported.

Heat, Central and Eastern Allegany

When
July 1, 11:00 AM EST to 4:00 PM EST
Where
Central and Eastern Allegany forecast zone
Reported by
ASOS
Coordinates
39.622, -78.699 (the zone’s center; the record gives no point)

Heat indices around 100 degrees were reported.

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 2018Every state in 2018This day in weather historyWarnings in Maryland, July 2018

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 2026-09-24. Each event’s entry at NCEI: 772238, 772239.