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My Location: Berlin, MD
Current Time: 04:51:32 PM EDT
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| Other Alerts |
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| Weather Alert |
| Other Weather Alerts | ||
| Type | Flood Warning |
Flood Warning |
| Issued By | NWS Juneau AK | |
| Issuing Time | Tue, 12 Aug 2025 11:31:00 PDT | |
| Broadcast Time | Tue, 12 Aug 2025 11:31:00 PDT | |
| Valid Until | Thu, 14 Aug 2025 09:00:00 PDT | |
| Brief Description | Flood Warning | |
| Detailed Description | USGS laser gauge data from Suicide basin indicates a release from the basin has started. Mendenhall lake levels are also showing a release has started. A crest is expected around Wednesday afternoon near record levels of somewhere between 16.3 and 16.8ft. * WHAT. Flooding caused by a glacier-dammed lake outburst is expected. * WHERE. The Mendenhall Lake and River near areas around the glacier visitor center, the Mendenhall campground, Skaters Cabin Road, View Drive and possibly below Back Loop bridge. * WHEN. Until 800 AM AKDT Thursday. * IMPACTS. Flooding of rivers, creeks, streams, other low-lying areas and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS. - At 1029 AM AKDT, gauge reports indicated a glacier-dammed lake outburst across the warned area. Flooding is ongoing or expected to begin shortly, especially near the Mendenhall Lake and River. - The outburst flood forecast is based on an estimated volume of water in the glacier dammed lake and an estimated release rate based on previous events. The extent of water drainage within the basin (partial or full) can vary widely between outburst flood events and is a major source of uncertainty in the forecast, particularly with regard to the peak flood stage. - For Mendenhall Lake : At 9:45am the stage was 9.6 feet. Flood Stage is 9.0 feet. Forecast: A crest around 16.6 feet is expected around 4:00pm Wednesday. Wednesday. Water levels will go above 10 feet around 4:00pm Tuesday. Water levels will go above 12 feet around 2:00am Wednesday. Water levels will go above major flood stage around 9:00am Wednesday. Impacts: At 9.5 feet: Water levels up to 0.5 feet will cover Skaters Cabin Road between Skaters Cabin and West Glacier Trailhead. Campsite 7 will be flooded with water starting to flow over the road between campsites 8 and 9 in the Mendenhall Campground. At 10.0 feet: Water levels will inundate Mendenhall Campground with up to 3 feet of water covering low areas as well as up to 1.5 feet of water covering Skaters Cabin Road. Portions of West Glacier Trail will be impassable. Areas along View Dr will start to flood and cause minor flooding of yards. Closure of pedestrian pathways beneath Brotherhood Bridge and the trail system on the west side of Mendenhall River during outburst events. At 10.5 feet: Significant flooding along the Mendenhall Lake area with more than 3 feet of water in places near Mt. McGinnis trailhead and the Mendenhall Campground will be evacuated. At 11.0 feet: Some homes along View Dr will have up to 1.5 feet of water in yards. Locations below back loop bridge will see bank erosion along unreinforced river banks along with hazardous navigation from debris in the river. Homes along the river on Meander Way will begin to see flooding of some backyards on the outside of the HESCO levee. Portions of the Dredge Lake Trail System will be impassable. Flood waters start to reach Dredge Lake. At 11.5 feet: The low section of road past 9374 View Dr will begin to flood along with water approaching some homes towards the end of road. At 12.0 feet: Significant bank erosion along unreinforced river banks. The low section of road past 9374 View Dr will be flooded with up to 0.5 feet of water. Some houses on the south side and the east end of View Dr will start to flood. Water begins to flood some backyards of homes on the northside of View Dr as well as other low lying areas. Back Loop Rd Bridge will be closed during outburst events. At 12.5 feet: 2 to 4 feet of water in some backyards along Meander Way on the the river side of the HESCO levee. At 13.0 feet: The low section of road past 9374 View Dr will be flooded with 2 ft of water. Water begins to flow through some backyards of homes on the northside of View Dr and flood low lying areas. A few locations on View Dr will see depths of 1 to 2 feet of water in homes. At 13.5 feet: Water starts to back up behind homes between Riverside Dr at Tournure St and Mendenhall River School. Locations on River Rd with low river banks will begin to see water inundate yards. Severe bank erosion along unreinforced river banks. At 14.0 feet: The low section of road past 9374 View Dr will be significantly flooded and impassable. Water will begin to flow over the road from water flowing behind homes on the north side of View Dr. More homes along View Dr will begin to see moderate to major flooding. Locations on River Rd with low river banks will begin to see water approach driveways. At 15.0 feet: Major flooding of multiple homes along View Dr. Water will begin to approach a few homes along River Rd with low river banks with possible flooding of driveways and 1 to 2 feet of water in backyards. Up to 1 foot of water covering Riverside Dr at Tournure St and Mendenhall River School. At 16.0 feet: Water starts to overtop the bank and flood low lying areas near Wildmeadow Ln. Up to 0.5 feet of water will be in the intersection of Skaters Cabin Rd and Arctic Cir. Some backyards of homes between Tamarack Ct and Whitewater Ct will start to see flood waters along with water approaching River Rd near homes with low river banks and possibly flooding those homes. Water will start to flood backyards of homes on Meadow Ln and Stikine St. At 17.0 feet: This is an estimate that water will be overtopping the river banks and flooding into the homes around Wildmeadow Ln. Businesses in the Vintage Park Blvd area will be surrounded and potentially inundated by flood waters. Homes on Meadow Ln from Stikine St to Eagle St will be inundated with flood water. Water will be covering Tournure St from Riverside Dr to Columbia Blvd. Black Wolf Way and Pond Vista Dr will have water across the roads. All parts of View Dr will be covered by flood water. |
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