Stay up to date with all weather conditions affecting transportation in the United States

Summary: An approaching Pacific storm system may produce showers with areas of gusty winds and heavy mountain snow on the West Coast.  Meanwhile, a few strong to severe storms with gusty winds and hail will be possible across parts of the Midwest on Wednesday, and Abnormally warm temperatures will return in the East. Advisories: California, Wyoming, South Dakota, Nebraska

 

Summary: A storm will move across the Intermountain West and Rockies through Tuesday. Heavy snow is forecast for the higher terrain with rain for lower elevations. Meanwhile, large area of high pressure for the East will keep the weather tranquil with moderating temperatures. Later this week, a more significant storm is possible for the West, especially for northern California. Advisories: Utah, Wyoming, Colorado

 

Summary: Low pressure will progress inland across the west overnight with some valley rain and higher terrain snow as this system tracks across the Intermountain West on Monday. East of the Rocky Mountains, high pressure will keep the weather pattern tranquil with moderating temperatures expected for the center of the nation. Advisories: Oregon, California, Utah, Wyoming

• 1-4 inches of snow
• 35mph wind gusts
• Until 9 AM PDT today

• 3-8 inches of snow
• 12 inches locally
• Until 5am PDT today

• 6-12 inches of snow
• From 3 PM this afternoon to noon MDT Tuesday

• 12-18 inches of snow
• From 1 AM to 6 PM MDT Tuesday

• 4-6 inches of snow
• From late tonight through Tuesday evening

 

Summary: While transit is still being impacted in some areas affected by the winter storm early this week, previously closed highways across Wyoming, Colorado and South Dakota are now reopened and operational, though below average temperatures are likely to remain from the North/Central High Plains, westward to the Great Basin. Heavy rainfall from the remnants Tropical Cyclone Pamela could produce areas of flash, urban, and small stream flooding across portions of Texas and into the Ozarks today. Meanwhile, much above average temperatures will persist across the eastern third of the country through the end of the week.

 

 

Summary: A strong storm will bring a winter weather and strong winds for portions of the western U.S. Meanwhile, the remnants of Tropical Storm Pamela will move across Texas and southeast Oklahoma with heavy rainfall and possible flash flooding on Wednesday. The eastern U.S. will remain mild for the middle of October. Advisories: Montana, Wyoming, Colorado, North Dakota, South Dakota, Nebraska

 

 

 

Summary: Heavy snow and powerful winds continue across the Great Basin mountains, Rockies, and into the High Plains, creating hazardous travel conditions. Severe storms developing in the Plains ahead of this front may have damaging winds, large hail, and a couple of tornadoes. Meanwhile, Pacific Hurricane Pamela, while not expected to directly impact the US, is forecast to make landfall along the west-central coast of Mexico as a major hurricane some time on Wednesday morning. Adverse conditions are expected across Baja California Sur, Sinaloa, and western Durango. Heavy rains from Pamela's remnants are expected across portions of central Texas and southeastern Oklahoma late Wednesday and Thursday, which may result in flooding. Advisories: Idaho, Nevada, Montana, Wyoming, Utah, Colorado, North Dakota, South Dakota

 

• Above 6000ft
  • 6-10 inches additional accumulation
• Below 6000ft
• 2-5 inches additional accumulation
• 40mph
• Continuing through noon today

• 1-3 inches additional accumulation
• Continuing through 6 AM MDT today

• 1 inch additional accumulation
• 40mph wind gusts
• Until 8 AM PDT this morning

• 8-15 inches additional snow
• 35mph wind gusts
• Until 6 PM MDT Wednesday

• 2-8 inches additional snow
• Until 6 PM MDT Wednesday

• East Slopes
  • 12-24 inches additional snow
• West Slopes
  • 10-15 inches additional snow
• 45mph wind gusts
• Until Noon Wednesday

• 6-14 inches of additional snow
• Through 6 PM MDT this evening

• 5-10 inches of snow above 9000ft
• 50mph wind gusts
• From 6 PM this evening to midnight MDT Tuesday night

• 2-5 inches of snow
• 40mph wind gusts
• From 6 PM this evening to 6 PM MDT Wednesday

• 6 inches of snow
• 45mph wind gusts
• From midnight tonight to 6 PM MDT Wednesday

 

 

Summary: Our first significant winter storm system of the year will continue producing heavy mountain snow, high winds, and much below normal temperatures. Isolated severe storms may produce all hazards from the Mississippi Valley to the Great Lakes. An offshore low with a low chance of subtropical development may produce locally heavy rain and gusty winds in eastern North Carolina. Advisories: Idaho, Nevada, Montana, Wyoming, Utah, Arizona, Colorado, South Dakota

 

• Below 6000ft
• 2-6 inches of snow
• Above 6000ft
• 6-14 inches of snow
• Up to 20 inches along ridges and passes
• Winds gusting up to 40mph
• From midnight tonight to noon MDT Tuesday

• 2-5 inches of snow
• Up to 12 inches along ridges and passes
• Winds gusting up to 40mph
• From midnight tonight to 6 AM MDT Tuesday

• Above 7000ft
• 4-10 inches of snow
• Below 7000ft
• 1-4 inches of snow
• Winds gusting up to 40mph
• Continuing until 9 AM PDT today

• 6-18 inches of mountain snow
• 3-6 inches of lower elevation snow
• Until Noon MDT Tuesday

• Above 5000ft
• 3-5 inches of snow
• Below 5000ft 
• Up to 3 inches of snow
• From 6 PM this evening to Noon MDT Tuesday

• 15-15in of west slope snow
• 12-24 inches of east slope snow
• 45mph wind gusts
• From 1 AM Monday to noon MDT Wednesday

• 6+ inches of snow
• 45mph wind gusts
• From Tuesday afternoon through Wednesday afternoon

• 8-18 inches of snow
• From Monday evening through Tuesday evening

• 4-8in of snow, up to 12in
• 40mph wind gusts
• From 6 PM this evening to midnight MDT Tuesday night

• 6+ inches of snow
• 45mph winds
• From Tuesday afternoon through Wednesday afternoon

 

Summary: Several strong storm systems are forecast to move through the Western and Central U.S. this weekend into next week with much below normal temperatures and winter weather for the central and northern Rockies. This could be the first widespread snowfall of the season. Heavy rain and severe thunderstorms will be possible for portions of the Plains. Current Advisories: Utah

 

• 4-12 inches of snow
• 40mph wind gusts
• From 6 AM Friday to 6 PM MDT Saturday

 

Summary: Swells from Hurricane Sam are expected to reach Bermuda and the Bahamas today, and then spread to the Unites States east coast and Atlantic Canada this weekend. Tropical Storm Victor is tracking northwest through the eastern tropical Atlantic, and is not considered to be a threat at this time. Otherwise, there's a relatively quiet weather pattern across the US today, with jut some locally heavy rainfall across parts of the central and southern Plains and southern Rockies that may bring flash flooding, especially in parts of Texas.

 

Summary: While Hurricane Sam won't directly threaten US East Coast, it will be a wave generator, causing large swells along portions of the Leeward Islands today, portions of the Virgin Islands, Puerto Rico, Hispaniola, the Bahamas, and Bermuda by Thursday or Friday, and the US East Coast and Atlantic Canada by the weekend. Additionally, there are two disturbances forming off the African coast that are showing a high chance of development. Otherwise, its a tranquil late September across the US with some areas of locally heavy rain across the central plains, and above normal temperatures from the Mississippi valley through the Tennessee and Ohio valleys.