Hydrologic Outlook: Lower Matanuska Valley; Hatcher Pass; Southern Susitna Valley; Central Susitna Valley

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Hydrologic Outlook — Lower Matanuska Valley; Hatcher Pass; Southern Susitna Valley; Central Susitna Valley Severity: Unknown. Certainty: Possible. ESFAFC Locations: * Willow and Talkeetna * Rivers, creeks, and streams with headwaters along the western Talkeetna Mountains Timing: * Now through Wednesday (tomorrow) afternoon. Heaviest rainfall expected from now through about midnight tonight. Rainfall: * The heaviest rain is ongoing. However, an estimated 1.5 to 2 inches of rain have fallen along the Alaska Range and Talkeetna Mountains so far today, with about 0.5 to 1 inches in Susitna Valley. * Additional rainfall amounts of about 0.5 to 1.5 inches are forecast from now through tomorrow afternoon. * These rainfall totals likely won't be high enough for widespread flooding, but smaller tributaries draining the Talkeetnas including Willow Creek and the Little Susitna may reach bankfull. Hydrologic Concerns: * Many lower locations along rivers such as gravel bars and other spots popular for camping and recreating may become inundated with water with rivers reaching bankfull conditions. * Heavy rain may result in localized ponding in low-lying areas and locations with poor drainage. Next Steps: * Residents along area streams as well as river users and recreators should anticipate higher than normal water levels and are advised to monitor weather and river forecasts. * Send weather or flooding reports to inws.ncep.noaa.gov/report/ or by calling 1-907-266-5127. * Reports on river conditions may be sent to the river forecast center by calling 1-907-266-5160.