Maine, 1999

Flash Flood and Hail in Maine, August 12, 1999

August 12, 1999 · NWS CAR · 7 events in 2 counties and zones

3 thunderstorm wind, 2 hail, 1 funnel cloud, 1 flash flood, as filed by the National Weather Service.

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
7

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 radar

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

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Event by event

3 thunderstorm wind, 2 hail, 1 funnel cloud, 1 flash flood. Local standard time, as filed.

Hail, Aroostook

When
August 12, 2:15 PM EST
Where
Aroostook County, Grand Isle
Measured
1.5 in hail
Reported by
TRAINED SPOTTER
Coordinates
47.300, -68.150

Funnel Cloud, Penobscot

When
August 12, 3:30 PM EST
Where
Penobscot County, Patten
Reported by
GENERAL PUBLIC
Coordinates
45.401, -68.649 (the zone’s center; the record gives no point)

Thunderstorm Wind, Penobscot

When
August 12, 3:45 PM EST
Where
Penobscot County, Shin Pond
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
46.100, -68.550

A large tree was snapped off by the winds.

Thunderstorm Wind, Aroostook

When
August 12, 4:50 PM EST
Where
Aroostook County, Hodgdon
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
46.050, -67.870

Large tree limbs were snapped off by the winds.

Hail, Aroostook

When
August 12, 4:55 PM EST
Where
Aroostook County, Cary
Measured
1 in hail
Reported by
TRAINED SPOTTER
Coordinates
45.970, -67.830

Thunderstorm Wind, Aroostook

When
August 12, 5:00 PM EST
Where
Aroostook County, Cary
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
45.970, -67.830

Large tree limbs were snapped off by the winds and briefly blocked Brewer Road.

Flash Flood, Aroostook

When
August 12, 5:00 PM EST
Where
Aroostook County, Limestone
Reported by
METEOROLOGIST(NON NWS)
Coordinates
46.659, -68.599 (the zone’s center; the record gives no point)

Heavy rains associated with slow moving thunderstorms produced street flooding.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Maine in 1999Every state in 1999This day in weather historyWarnings in Maine, August 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 2026-09-24. Each event’s entry at NCEI: 5718372, 5718373, 5718374, 5718375, 5718376, 5718377, 5718378.