Wetter-Warnungen, Larch Mountain Corridor

Hydrologic Outlook issued June 2 at 5:17AM PDT by NWS Portland OR ESFPQR An unseasonably strong and moist low pressure system will spread moderate to locally heavy rain across southwest Washington and northwest Oregon this morning, continuing through tonight and possibly early Monday morning. Rainfall rates are the primary concern with this event. Several hours with rainfall rates of one quarter to one half inch per hour are expected for the Coast Range, Cascades, and locally along the coast later today through this evening. Rainfall rates of this magnitude, especially when sustained for several hours, can cause flooding of creeks and small streams. Areas of poor drainage will also lead to standing water on some area roads. Flooding is not anticipated on mainstem rivers, but significant rises are likely. Rain is expected to taper to showers Monday morning, dramatically decreasing the rainfall rates and any related impacts throughout the day Monday. Monitor weather.gov/portland for the latest updates and any watches, warnings, or advisories that may be issued for this event.