Heavy Rain in Alaska
Every heavy rain event the National Weather Service has filed in Alaska, year by year, with the most significant episodes. Rainfall totals unusual for the place and season that did not produce a flood.
The most significant on the map
The most significant heavy rain episodes in Alaska.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 34
- Deaths
- 1
- Injuries
- 0
- Damage
- $3.9 million
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Heavy Rain in Alaska, August 26 to 27, 2015Heavy rain occurred over several days at Denali National Park, causing streams to run high. 1.8 inches of rain was reported from early on the morning of the 26th through the mid afternoon of the 27th at the Eielson Visitors Center RAWS.
- Debris Flows and Heavy Rain in Alaska, November 18 to 25, 2005A week of record rainfall impacted much of Southeast Alaska during this time. A series of strong low pressure systems tracked northeast from the Aleutians and inland near Cape Suckling. The strongest of these lows was 963 MB around 12Z on the 18th.
- High Wind and Heavy Rain in Alaska, September 17 to 18, 1999An intense 965 mb low just east of Chignik Friday morning, curved north northwest through Bristol Bay to near Togiak by late Friday night. The low drifted slowly northwest and began to weaken thereafter.
- High Wind and Heavy Rain in Alaska, August 19 to 20, 1998A strong Bering Sea storm and its associated front brought strong winds to many areas of southwest Alaska, the Alaska Range , Southcentral Alaska and even into the Copper River Basin.
- High Wind and Heavy Rain in Alaska, August 2 to 5, 1999A vigorous low moved from the north Pacific into the southeastern Bering Sea late Monday and Tuesday. The central pressure reached at least as low as 974mbs...with the center located just south of the Pribilofs early Wednesday. The low then curved northwest and began to weaken.
- Heavy Rain in Alaska, August 11 to 13, 1999Heavy rains preceded a vigorous subtropical low across Kodiak Island Wednesday and Thursday. This low was a very interesting one, meteorologically, in that it formed in the northern part of the central Pacific and actually developed an eye for about 12 hours Tuesday.
- High Wind and Heavy Rain in Alaska, September 1 to 2, 1998A very strong low, estimated central pressure of 962 mbs, moved northward into the Gulf of Alaska Sunday and Monday.
- High Wind and Heavy Rain in Alaska, September 29, 1998A new record for the date, 3.3 inches, eclipsed the old 2.04 set in 1935. Also, on this date, wind gusts reached 48 mph from the northeast, around the back side of a vigorous low in the Gulf of Alaska.
- Heavy Snow and Heavy Rain in Alaska, May 25, 1999Much of the Copper River Basin experienced an unusual late May precipitation event. A weakening surface/upper air low drifted north through the eastern Gulf of Alaska Monday.
- Heavy Rain in Alaska, November 12 to 14, 2003A low pressure system over the Eastern Gulf spread heavy rains into Southern Panhandle. 4.25 inches of rain was measured at the Sitka airport in the 18 hours up to Thursday morning November 13.
- Flood and Heavy Rain in Alaska, May 25 to 27, 2012The first Heavy rain of the season fell across the Chena, Salcha, and Goodpaster River basins on May 25-26, 2012. Rainfall amounts of up to 1.26 inches fell at the Goodpaster River gage in approximately 18 hours.
- High Wind and Heavy Rain in Alaska, October 26 to 28, 2019A low pressure system in the Bering Sea pushed a warm front across southern Alaska. The storm brought moisture from much further south, contributing to heavy rainfall in Kodiak. In Southcentral, high winds were experiences as the front crossed the area.
- Heavy Rain in Alaska, June 22, 1996On June 22nd, the same storm that brought strong winds also drenched Cold Bay with 3.2 inches of rain.
- Heavy Rain in Alaska, July 22 to 23, 1997A line of strong showers moved through Sitka and led to minor urban flooding, as storm drains were filled beyond capacity. The Sitka Airport received 1.05 inches of rain, including 0.68 inches in 1 hour.
- Heavy Rain in Alaska, September 22 to 23, 1997Yakutat received 6.26 inches of rain over a 48-hour period from the remnants of Typhoon David. Rivers and streams rose to near bankfull, but no damage was reported.
- Heavy Rain in Alaska, September 18 to 20, 1998Heavy rain in the Seward area Friday and Saturday caused substantial rises on the Resurrection River and on smaller streams in and around Seward. A flood watch was issued.
- Heavy Rain in Alaska, September 13, 1999Heavy rains around Girdwood and in Portage Valley prompted a Flash Flood Watch for small streams. Over 2 inches of rain was recorded in 12 hours around Girdwood, with much higher amounts around Portage.
- Heavy Rain in Alaska, July 29 to 30, 1999Heavy rains moved into the Upper Susitna Valley late Thursday, associated with a stalled front across the area.
- Heavy Rain in Alaska, September 12 to 13, 2001Heavy rainfall in the Haines area (over 3 inches in less than 24 hours) triggered a large mudslide that closed the Haines Road from mile 22-23.
- Heavy Rain in Alaska, July 5 to 6, 2006In addition to scattered wet thunderstorm the afternoon of the 5th, a series of thunderstorms moved over the southwestern Middle Tanana Valley the evening of the 5th.
- Heavy Rain in Alaska, June 22 to 24, 2011Heavy rainfall in excess of an inch on the 22nd caused a six mile section of the Steese Highway between Birch Creek and Circle to washout in spots on the 23rd.
- Heavy Rain in Alaska, June 22 to 24, 2011Heavy rainfall in excess of an inch on the 22nd into the 23rd caused the Taylor Highway to be closed in two spots. The first road closure lasted approximately 11 hours and occurred in the Jack Wade area between mile posts 83 and 86, and was caused by a washout.
- Heavy Rain in Alaska, June 13 to 14, 2012Heavy rainfall of approximately 1.25 inches on the 12th caused a rock slide and debris to fall on the Parks Highway in the Nenana River Canyon at MP 239.5 late on the evening of the 12th into the early morning hours of the 13th.
- Heavy Rain in Alaska, June 1 to 2, 2012Heavy rain fell from the early evening of the 1st into the morning hours on the 2nd. The heavy rain caused a rock slide in the Nenana River Canyon at MP 239.5 along the Parks Highway that sent debris onto the Parks Highway just north of Denali National Park.
- Heavy Rain in Alaska, June 3, 2019A weak thermal trough over the mainland of Alaska allowed thunderstorms to develop in the Matanuska Valley. Steering flow was very light, making the storms almost stationary. Combined with poor drainage, this produced localized flooding in Palmer, Alaska.
More
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.