Hydrologic Outlook issued February 24 at 1:55PM MST by NWS Pocatello ID
ESFPIH Temperatures tonight will remain above freezing, continuing the melt cycle into Tuesday. Low and mid elevation snow melt and run off will continue. Increased runoff on top of frozen or saturated ground may lead to ponding of water or sheet flooding in low lying or poor drainage areas, along with rises on small streams and creeks. Locations most prone to rapid snowmelt include areas below 6000 ft across the Eastern Magic Valley, Lower and Upper Snake Plain, and South Hills, where snow pack still exists. A slight cooling trend is expected to begin Tuesday and continue through the remainder
Hydrologic Outlook issued February 23 at 1:34PM MST by NWS Riverton WY
ESFRIW Low elevation snowpack of around 4 to 10 inches exists across much of the northern portion of the Bighorn Basin including Greybull, Lovell, Powell, and Cody. This snowpack contains an estimated 1 to 3 inches of Snow Water Equivalent (SWE). Temperatures beginning are expected to climb into the low 40s to near 50 degrees each afternoon through next weekend. Warmest temperatures look to occur Friday through Sunday (Feb 28 - Mar 2). The warm temperatures, combined with the significant low elevation snowpack, could result in significant melting and injection into local rivers and streams. Ice break up on the
Hydrologic Outlook issued February 23 at 1:56PM MST by NWS Pocatello ID
ESFPIH Temperatures will continue to warm into early next week, increasing low elevation snowmelt and runoff, potentially leading to minor lowland flooding. Locations most prone to rapid snowmelt include areas below 6000 ft across the Eastern Magic Valley, Lower Snake Plain, and South Hills, where snow pack still exists. In these areas, the increased runoff on top of frozen or saturated ground may lead to ponding of water or sheet flooding in low lying or poor drainage areas, along with rises on small streams and creeks. These warming temperatures will peak on Monday, with afternoon highs reaching the 50s across
Hydrologic Outlook issued February 23 at 3:48AM MST by NWS Missoula MT
ESFMSO Where: Powell, Deer Lodge, and Silver Bow Counties in Montana and Lemhi County in Idaho. What: A significant warm up will continue through Monday, February 24. High temperatures will reach into the 40s, with overnight temperatures near or above freezing. Rapid lowland snowmelt will lead to ponding of water in low lying areas, especially in areas of poor drainage and/or in basements/crawlspaces. Ice jam releases are also a concern on small streams and/or creeks, and may lead to localized flooding. Rain showers will bring precipitation totals up to 0.20 inches across valley areas Sunday into Monday, with upwards of
Hydrologic Outlook issued February 22 at 12:30PM MST by NWS Riverton WY
ESFRIW Low elevation snowpack of around 4 to 12 inches exists across much of the northern portion of the Bighorn Basin including Greybull, Lovell, Powell, and Cody. This snowpack contains an estimated 2 to 4 inches of Snow Water Equivalent (SWE). Temperatures beginning Sunday are expected to climb into the low 40s to near 50 degrees. The warm temperatures are expected to persist through at least the middle of next week. The warm temperatures, combined with the significant low elevation snowpack, could result in significant melting and injection into local rivers and streams. Ice break up on the Bighorn and
Hydrologic Outlook issued February 22 at 11:19AM PST by NWS Seattle WA
ESFSEW An atmospheric river this weekend, followed by another frontal system later Monday will result in heavy rain at times over the area. Total precipitation amounts in the mountains will range from 3 to 5 inches, with locally heavier amounts possible in the mountain. Snow levels will rise above 7000 feet, will result in snow melt at low to mid elevations. The most likely areas for river flooding will be for rivers flowing off of the Cascades and Olympics. Urban and small stream nuisance flooding and rainfall-induced shallow landslides will also be possible. Please monitor the latest river forecasts from
Hydrologic Outlook issued February 22 at 6:10PM PST by NWS Pendleton OR
ESFPDT Synopsis: Rain and high mountain snow this weekend and early next week will lead to rising water levels on area streams and rivers. Total rainfall amounts of 2 to 5 inches are expected in the Cascades and 1 to 3 inches in the eastern Oregon mountains. In addition, temperatures rising to the 40s and lower 50s in the mountains will lead to snow melt adding even more water to area rivers and streams. What: Precipitation and snow melt due to warmer temperatures this weekend into early next week will lead to rises on area creeks, streams and rivers. Many
Hydrologic Outlook issued February 22 at 5:40PM PST by NWS Pendleton OR
ESFPDT Synopsis: Rain and high mountain snow this weekend and early next week will lead to rising water levels on area streams and rivers. Total rainfall amounts of 2 to 5 inches are expected in the Cascades and 1 to 3 inches in the eastern Oregon mountains. In addition, temperatures rising to the 40s and lower 50s in the mountains will lead to snow melt adding even more water to area rivers and streams. What: Precipitation and snow melt due to warmer temperatures this weekend into early next week will lead to rises on area creeks, streams and rivers. Rivers
Hydrologic Outlook issued February 22 at 2:57AM PST by NWS Portland OR
ESFPQR An series of frontal systems will bring heavy rainfall to northwest Oregon and southwest Washington through Monday. Heavier rain will begin with the arrival of a front this afternoon, and intensify tonight into Sunday. After a brief lull in precipitation late Sunday, another strong system will bring additional moderate to heavy rainfall on Monday. This will lead to rises on rivers and creeks, especially for rivers draining the Willapa Hills and Oregon Coast Range through Monday. Main stem rivers may be delayed to respond, and flooding may occur beyond this time frame. There is around a 20-30% chance of
Hydrologic Outlook issued February 22 at 12:14PM MST by NWS Great Falls MT
ESFTFX Warming temperatures through next week will lead to changes in river ice conditions and an increased risk of river ice breakup and the potential for ice jams. Lower elevation snowmelt and still frozen ground could also lead to some increased runoff into creeks and rivers, adding to the potential for river ice breakup. Ice jams are unpredictable and flooding can rapidly occur, so those with interests along waterways should monitor water levels over the coming week and take action should flooding occur. Additionally, frozen ground after a prolonged cold period and melting snow may result in standing water in