With nearly 4,900 employees in 122 weather forecast offices, 13 river forecast centers, 9 national centers, and other support offices around the country, NWS provides a national infrastructure to gather and process data worldwide.
A mere 6 inches of fast-moving flood water can knock over an adult. It takes just 12 inches of rushing water to carry away a small car, while 2 feet of rushing water can carry away most vehicles. It is NEVER safe to drive or walk into flood waters.
Weather patterns at Mount Rainier are strongly influenced by the Pacific Ocean, elevation, and latitude. The climate is generally cool and rainy, with summer highs in the 60s and 70s. While July and August are the sunniest months of the year, rain is possible any day, and very likely in spring, fall, and winter.
Visitors should be aware that mountain weather is very changeable. Wet, cold weather can occur anytime of the year. Although late-July and August are generally the driest and warmest time of the year, summer can also be wet and cool. Snow will remain at the 5,000 to 8,000 feet elevation well into mid-July.
Hikers and mountain climbers should be prepared for changing weather. Pay attention to weather forecasts, both one day and long range, avalanche warnings, and special weather alerts. Have extra clothing, rain gear, and a tent for protection against storms anytime of the year. Know the weather forecast and plan your trip accordingly.
Mount Rainier Recreational Forecast
Daily update of park weather with forecast for next several days from National Weather Service.
Northwest Avalanche Center
Current conditions and snow level at Paradise.
Western Washington Weather Forecast
National Weather Service forecast for the various western Washington regions, including the Cascades and Mount Rainier.
Chinook & Cayuse Mountain Pass Report
Washington State Department of Transportation (WSDOT) information on Chinook (SR410) and Cayuse (SR123) mountain passes on the east side of Mount Rainier National Park.
Camp Muir Weather Station
Current weather conditions at Camp Muir from the Northwest Avalanche Center.
National Weather Service Seattle Office
Access National Weather Service information for all of western Washington.
Use the following links to learn about snowpack conditions at Mount Rainier.
Paradise SNOTEL Data Report
Information on snow depth, current temperature, year-to-date precipitation and more at Paradise. Updated hourly.
Snow Water Equivalent (SWE) Plot for Paradise
Plot of SWE in inches compared with average (1981 to present), created by USDA Natural Resources Conservation Service.
Modeled Snow Water Equivalent Forecast Map
Forecast model map of SWE in inches for Mount Rainier and the surrounding area, created by NOAA National Operational Hydrologic Remote Sensing Center.
Cayuse Pass SnoTel Station
Weather and snow depth information at Cayuse Pass from the USDA Natural Resources Conservation Service.
Annual Snowfall Totals at Paradise, 1920 to Present
This short time lapse video provides a snapshot of weather at Mount Rainier over the course of a year. The video uses still shots from the Air Quality webcam, located in Paradise overlooking the Nisqually valley. (no sound).
Western Caribbean/Southwestern Gulf of Mexico (AL94): A tropical wave over the central Caribbean Sea is producing disorganized shower activity while it moves rapidly westward at around 25 mph. Environmental conditions could become more conducive for some gradual development in a couple of days over the western Caribbean Sea or over the southwestern Gulf of Mexico during the weekend. * Formation chance through 48 hours, low, 10 percent. * Formation chance through 7 days, low, 20 percent.
Eastern Tropical Atlantic: A tropical wave located a few hundred miles southwest of the Cabo Verde Islands is producing disorganized showers and thunderstorms. Some development is possible during the next several days, and a tropical depression could form over the tropical Atlantic by the end of the week or this weekend while the system moves westward at 15 to 20 mph. * Formation chance through 48 hours, low, near 10 percent. * Formation chance through 7 days, medium, 40 percent.
Potential Heavy Rainfall for southern Mexico and Central America: Satellite imagery reveals the beginnings of a broad cyclonic circulation associated with a forming Central American Gyre (CAG) in Central America. Latest computer model guidance that there will be large precipitation amounts in the coming days with the CAG. Satellite imagery shows scattered showers and thunderstorms over Belize, and over some sections of Honduras and Nicaragua. Isolated showers and thunderstorms are over some sections of southeastern Mexico and Guatemala. The period of heavy rainfall in Panama and Costa Rica is expected through Fri, and for Belize, Guatemala and southern Mexico starting during the upcoming weekend and early next week. It is recommended that residents in the area to be affected refer to products from their local or national meteorological weather services for the latest information on this upcoming heavy rainfall event.
A far eastern Atlantic tropical wave has its axis along 29W/30W from 03N to 16N, moving westward at 15 kt. The tropical wave is producing disorganized scattered moderate to isolated strong convection west of the wave to 34W from 09N to 11N, and from 05N to 07N. Scattered moderate convection is within 90 nm east of the wave from 05N to 07N. This wave remains surrounded by very deep atmospheric moisture. Some slow development of this system is possible during the next several days, and a tropical depression could form over the tropical Atlantic by the end of the week or this weekend while the system continues its westward motion.
A central Atlantic tropical wave has its axis along 46W from 05N to 18N. It is moving westward at 10 to 15 kt. The majority of this wave is being impacted by a dry and stable atmospheric environment. Scattered moderate convection is seen from 06N to 09N between 44W and 47W.
A central Caribbean tropical wave has its axis along 74W south of 18N to inland eastern Colombia. It is moving westward at about 20 kt. The 700 mb GFS wind guidance indicates a rather sharp northeast to southeast wind shift near the wave axis. The wave is surrounded by a very moist and unstable atmospheric environment. Increasing clusters of scattered moderate to strong convection is within 120 nm west of the wave from 14N to 18N. Scattered moderate convection is within 60 nm east of the wave from 14N to 18N. Fresh to strong east to southeast winds along with seas to 8 ft trail the wave to near 70W. Environmental conditions could become more conducive for some gradual development in a couple of days over the western Caribbean Sea or over the southwestern Gulf of Mexico during the weekend.
The previous western Caribbean tropical wave has moved just inland Nicaragua and northern Costa Rica. It is near 84W south of 16N. It is moving westward at 10 to 15 kt. Scattered moderate to isolated strong convection is within 60 nm from 11N to 13N
The monsoon trough enters the Atlantic from along the coast of southern Senegal and northwest Gambia, southwestward to 10N19W to 09N25W to 08N36W ,where latest scatterometer data indicates that it transitions to the ITCZ and to 08N45W. It resumes from 08N46W to 07N57W. Aside from the convection associated with the tropical waves, numerous moderate to strong convection is seen from 04N to 09N between 11W and 17W. Scattered moderate convection is from 04N to 09N between 34W and 41W.
A weak pressure gradient over the area is allowing for mainly light to gentle variable winds and slight seas over the basin. Scattered showers and thunderstorms are moving northward over the southwestern Gulf from 19N to 24N between 92W and 96W. This activity is being sustained by a weak upper tough over that part of the Gulf.
For the forecast, A ridge will dominate the Gulf waters through Fri supporting light to gentle winds and slight seas over the eastern half of the Gulf, and gentle to moderate winds and slight to moderate seas across the western half of the basin. Looking ahead, wind and seas may increase over the SW Gulf during the upcoming weekend as a strong tropical wave, with some potential of tropical cyclone development reaches the area.
Please see the Tropical Waves section for information on a central Caribbean fast moving wave. Otherwise, a moderate pressure gradient between central Atlantic high pressure and relatively lower pressures in the central and western Caribbean and in northern Colombia is maintaining moderate to fresh trade winds along with moderate seas across the eastern and southwestern Caribbean as noted in a recent ASCAT pass over those sections of the Caribbean. Moderate to fresh trade winds are elsewhere over the central Caribbean outside the winds associated to the tropical wave. Gentle to moderate east to southeast winds are over the northwest Caribbean along with slight seas.
For the forecast, environmental conditions could become more conducive for some gradual development of the tropical wave late this week over the western Caribbean Sea or over the SW Gulf of Mexico during the weekend. Regardless of development, fresh to strong winds and moderate to rough seas will accompany this wave as it continues its westward track across the central and western Caribbean through Fri night. Moderate to fresh trade winds are forecast elsewhere Fri through Sun night, except for light to gentle winds over the SW Caribbean.
A surface trough extends from near 31N73W to just north of the NW Bahamas. Scattered moderate to isolated strong convection is seen from 28N to 30N between 71W and 74W. Scattered moderate convection is within 120 nm southeast of the trough between 76W and 78W. This activity is being enhanced by an upper-level trough that extends from near 31N79W to South Florida. A surface trough extends N to S over the interior of the Florida peninsula. It along with daytime heating and energy from the upper trough, is producing scattered showers and thunderstorms are increasing over some interior portions of the peninsula. An areas of numerous moderate to strong convection is noted from 26N to 28N between 63W and 67W. Scattered moderate convection is to the east-northeast from 26N to 30N between 60W and 63W. This activity is being sustained by and upper level disturbance that is dropping southeastward along the NE side of an upper-level anticyclone.
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