Weather Updates

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

 

Weather Update 10.23.20 - U.S.

Posted by Jarrett on Oct 23, 2020 8:27:17 AM


A low pressure system will bring significant snowfall from the northern Rockies into the northern Plains this weekend, along with bitterly cold temperatures. Meanwhile, dry and gusty conditions will result in critical fire weather conditions over parts of California and the Four Corners region. Across the East, temperatures will gradually turn cooler in most areas with scattered precipitation. Active Advisories: Washington, Idaho, Montana, Wyoming, North Dakota, South Dakota, Nebraska

State Breakdown:
 
Washington
Winter Storm Warning
Strong early season storm bringing heavy snow conditions to the Cascades today
  • 7-13 inch accumulation
  • 40mph wind gusts
  • From 8 AM this morning to 5 AM PDT Saturday
Will impact transit along I-90, US-195, US-395, and US-2, including Snoqualmie Pass and Stevens Pass
 
Idaho 
Winter Storm Warning
Heavy snow expected across the panhandle tonight into Saturday
  • 6-12 inch accumulation
  • 12-18 inch accumulation above 4,000ft
  • From 3 PM MDT /2 PM PDT/ Friday to noon MDT /11 AM PDT/Saturday
Will impact transit along I-90, US-2, and US-95 including Lookout Pass, Fourth of July Pass, and Dobson Pass
 
Montana
Winter Storm Warning
Heavy snow expected across western and central MT tonight into Saturday
  • 7-15 inch accumulation
  • Up to 20 inches in the mountains
  • 35mph wind gusts
  • From 3 PM this afternoon to 9 PM MDT Saturday
Will impact transit along I-90, I-15, and US-93, US-12, US-87, US-89, and US-191 including through Lookout Pass
 
Wyoming
Winter Storm Warning
Heavy snow expected across northwest WY late tonight into Saturday
  • 8-14 inch acuumulation
  • 25-35mph wind gusts
  • From midnight tonight to midnight MDT Saturday night
Will impact transit along US 89, US-191, US-14, US-26, and US-212 including through Teton and Togwotee passes
 
North Dakota
Winter Storm Watch
Heavy snow possible across southwest ND Saturday morning through Sunday
  • 4-8 inch accumulation possible
Could impact transit along I-94, US-12, US-85, US-16, 
 
South Dakota 
Winter Storm Watch
Heavy snow possible across western SD Saturday morning through Sunday
  • 4-8 inch accumulation possible
Could impact transit along I-90, US-85, US-18
 
Nebraska 
Winter Storm Watch
Snow and windy conditions possible across central NB Saturday night through Monday
  • 5-7 inch accumulation possible
Could impact transit along I-80, US-83
 
 
For more information visit https://www.weather.gov/

 

Topics: weather

Weather Update 10.22.20 - U.S.

Posted by Jarrett on Oct 22, 2020 8:31:54 AM


Snow and ice will continue to impact portions of the Northern Rockies, Northern Plains, and Upper Midwest. Father south, heavy rainfall and a few severe thunderstorms are possible over the Middle Mississippi Valley. Another system will bring heavy precipitation to the Pacific Northwest Friday, while critical fire weather conditions prevail over California, the Southern Rockies, and High Plains. Active Advisories: Washington, Idaho, Montana, Wyoming, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan

State Breakdown:

Washington
Winter Storm Watch
Early season storm making heavy Cascade snow possible Friday
  • 5-12 inches possible
  • Heaviest impacts in the Cascades
Will impact transit along the I-90 corridor including Dobson and Snoqualmie passes.
 
Idaho
Winter Storm Watch
Heavy snow possible across the panhandle Friday evening into Saturday
  • 6-12 inches possible
  • Winds gusting up to 30mph
  • Wind chills as low as 20 below zero possible
Will impact transit along the I-90 corridor including Fourth of July and Lookout passes
 
Montana
Winter Storm Warning
Areas of heavy snow occurring today across portions of northern and southern MT
  • 7-13 inch accumulations
  • Winds gusting up to 35mph
  • Current conditions expected to lessen by afternoon today
Impacting transit along I-15 and I-90, including Lookout pass
 
Winter Storm Watch
Additional heavy snow possible across the state from Friday evening through Saturday
  • 4-13 inches additional snow
  • Wind chills as low as 20 below zero
After a period of relatively quiet conditions from Thursday afternoon through Friday morning, another storm is expected to impact the Northern Rockies from Friday night through Saturday afternoon.
 
Wyoming
Winter Storm Warning
Snow and blowing snow occurring today across north central WY
  • 12-18 inch accumulations
  • Until 6 PM MDT today
Impacting transit along I-90 from Gillette to the MT border
 
North Dakota
Winter Storm Warning
Heavy snow across southern ND continuing until this evening
  • 3-5 inches additional accumulation
  • Until 7 PM CDT /6 PM MDT/ this evening.
Impacting transit along I-94 and I-29
 
South Dakota
Winter Storm Warning
Heavy snow across much of the state continuing until this evening
  • 4-6 inches additional accumulation
  • Until 7 PM CDT /6 PM MDT/ this evening.
Impacting transit along I-29
 
Minnesota
Winter Storm Warning
Heavy snow expected across central MN over the course of today
  • 4-7 inch accumulations
  • Until 10 PM CDT this evening
Impacting transit along I-94
 
Wisconsin
Winter Storm Warning
The next round of accumulating snow expected today across northern WI
  • 5-8 inch accumulations
  • Until 1 AM CDT Friday.
Michigan
Winter Weather Advisory
Snow expected across the U.P. beginning this afternoon
  • 3-7 inches possible
  • Little accumulation along immediate lakeshore
  • From noon EDT /11 AM CDT/ today to 8 AM EDT /7 AM CDT/ Friday.
 
Additionally, dangerous surf and rip current conditions associated with Hurricane Epsilon are expected along the U.S. east coast over the next several days 
 
For more information please visit https://www.weather.gov

 

Topics: weather

Weather Update 10.21.20 - U.S.

Posted by Jarrett on Oct 21, 2020 8:14:51 AM


Low pressure will bring locally heavy snowfall from the Northern Rockies into the Dakotas and parts of Minnesota through Thursday with well below normal temperatures. Farther east, showers and thunderstorms are expected from the Midwest into the Central Plains. Meanwhile, critical fire weather conditions will prevail in California, the Great Basin, and Southern High Plains. Active Advisories: Idaho, Montana, Wyoming, North Dakota, South Dakota, Minnesota

State Breakdown:

 
Idaho 
Winter Weather Advisory
Early season snow today in the Idaho panhandle mountains
  • 1-2 inches of snow
  • Up to 4 inches locally
  • Impacting regions above 4000ft
  • From noon today to 8 PM PDT this evening. 
Treacherous driving conditions expected, including along I-90 through Lookout Pass
 
Montana
Winter Storm Warning
Heavy snow and blowing winds today in south central Montana
  • 10-15 inches of snow
  • Winds gusting up to 30mph
  • From noon today to 6 PM MDT Thursday.
Winter Weather Advisory
Wintry conditions expected today across much of the state 
  • 1-3 inches of snow 
  • Up to 6 inches of mountain snow
  • From noon today to 10 AM MDT Thursday.
Will likely impact transit along I-90, I-94, and I-15
 
Wyoming
Winter Storm Warning
Heavy snow and blowing winds expected today in north central WY
  • 6-10 inches of snow
  • From 6 PM this evening to 6 PM MDT Thursday.
May impact transit along I-90
 
North Dakota
Winter Storm Watch
Heavy snow possible across southern ND late tonight through Thursday night
  • 5-10 inches possible
South Dakota 
Winter Storm Watch
Heavy snow possible across northern SD late tonight through Thursday night
  • 4-6 inches possible
Minnesota 
Winter Storm Watch
Heavy snow possible across north central MN late tonight through Thursday night
  • 6-8 inches possible
 
 
Additionally, Hurricane Epsilon has formed in the mid-Atlantic, and while US landfall is not expected, dangerous surf and rip currently are expected along portions of the east coast over the next several days

Topics: weather

Weather Update 10.20.20 - U.S.

Posted by Jarrett on Oct 20, 2020 7:57:10 AM


Wintry weather is expected from the Northern Plains to Upper Great Lakes with periods of snow and freezing rain. Another system will bring more snow to the Northern Rockies and Northern Plains Wednesday night into Thursday. Meanwhile, fire weather and air quality concerns persist for portions of the Western U.S., including California. Temperatures will run above normal over much of the East. Active Advisories: Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan

State Breakdown:

 
Montana
Winter Weather Advisory
Snow expected across north central MT Wednesday into Thursday
  • 2-5 inches across lower elevations
  • 6-10 inches across higher elevations
  • From noon Wednesday to 10am MDT Thursday
Expected to impact transit along I-90 and I-15
 
North Dakota
Winter Weather Advisory
Snow expected across southeast ND through tonight
  • 2-5 inches
  • Until 7pm CDT this evening
May impact transit along I-94 and I-29
 
South Dakota
Winter Weather Advisory
Snow expected across northeast SD through tonight
  • 3-5 inches
  • Until 7pm CDT this evening
May impact transit along I-29
 
Minnesota
Winter Weather Advisory
Snow expected across most of the state today
  • 2-5 inches snowfall
  • Freezing drizzle also possible
  • 10am to 10pm CDT today
May impact transit along I-90, I-94, and I-35
 
Wisconsin
Winter Weather Advisory
Snow expected across the northern half of the state later today
  • 2-5 inches snowfall
  • From 1pm this afternoon to 1am CDT Wednesday
May impact transit along I-94
 
Michigan
Winter Weather Advisory
Snow expected across the western U.P. overnight tonight
  • 2-4 inches
  • May transition to rain before ending
  • From 5 pm EDT /4pm CDT/ this afternoon to 5am EDT /4am CDT/ Wednesday.

Topics: weather

Weather Update 10.19.20 - U.S.

Posted by Jarrett on Oct 19, 2020 7:51:51 AM


Much above average temperatures will continue from California, through the Southwest and into the Great Basin, with poor air quality due to ongoing wildfires. Elsewhere, a slow-moving storm over the Northern High Plains will reach the Upper Great Lakes by Wednesday. This system will produce areas of snow, rain, and freezing rain. Rainy weather will also continue over parts of Florida. Active Advisories: Montana, Wyoming

State Breakdown: 

Montana
Winter Weather Advisory
Additional snow accumulations across central MT today
  • 2-4 inches of snow
  • Heavy snow bands may drop 1 inch per hour
  • Tapering off around noon today
May impact transit along I-15 north of Great Falls and I-90 from Billings to the Idaho border.
 
Wyoming
Winter Weather Advisory
Snow continuing through this morning in north central WY 
  • Up to 4 inches of additional snow
  • Tapering off around 6am
Impacting transit along I-90

 

Topics: weather

Weather Update 10.16.20 - U.S.

Posted by Jarrett on Oct 16, 2020 7:49:10 AM


Low pressure will sweep from the Northern Rockies into the Northern Plains this weekend, bringing the first accumulating snowfall of the season to many areas. While cool weather will prevail in the East, parts of California and the Southwest will be unusually warm. Active Advisories: Montana, North Dakota

State breakdown below: 

Montana
Winter Weather Advisory 
Snow expected this evening through tomorrow over portions of central and north central MT
  • 1-6 inches accumulating
  • 35mph wind gusts
  • From 9pm MDT tonight to 6pm MDT tomorrow
Could impact transit along I-90 from Missoula to Bearmouth.
 
North Dakota
Winter Weather Advisory
Snow expected this evening through tomorrow in northwest and north central ND
  • 3-5 inches, locally 6+, accumulating
  • From 6pm CDT tonight to 1pm CDT tomorrow
Slippery road conditions may slow transit locally.
 
Additionally, Freeze Warnings, Freeze Watches, and Frost Advisories are in effect for parts of Oregon, Idaho, Utah, Colorado, Nebraska, Kansas, Oklahoma, Texas, Minnesota, Iowa, Missouri, Arkansas, Wisconsin, Illinois, Michigan, Indiana, Kentucky, Tennessee, Ohio, West Virginia, Virginia, North Carolina, New York, and Pennsylvania.

Topics: weather

Weather Update 10.12.20 - U.S.

Posted by Jarrett on Oct 12, 2020 7:37:40 AM


Delta will continue to bring heavy rainfall and thunderstorms from the Central Appalachians to southern New Jersey. Elsewhere, strong to severe thunderstorms may produce damaging wind gusts and hail across parts of the northern/central Plains into the Upper Midwest. Farther west, an active pattern will bring heavy precipitation to the Pacific Northwest and northern Rockies. Active Advisories: Idaho, Montana. 

State Breakdown Below: 

Idaho - Winter Weather Advisory - East Central. 1-3 inches above 5000ft with winds gusting at 35mph from 6 PM MDT /5 PM PDT/ this evening to noon MDT /11 AM PDT/ Monday.
 
Montana - Winter Weather Advisory - Western. 1-3 inches of snow above 5500ft with winds gusting at 40mph from 6 PM this evening to noon MDT Monday.

Topics: weather

Weather Update 10.9.20 - U.S.

Posted by Jarrett on Oct 9, 2020 9:06:10 AM


Hurricane Delta will make landfall in southwest Louisiana this evening and bring life-threatening storm surge, destructive winds, and significant flooding. As Delta moves inland, heavy rainfall and the risk of flooding will overspread the lower Mississippi-Tennessee Valleys and Appalachians over the next few days. Unsettled weather is also expected over the Pacific Northwest this weekend. States with Active Advisories: Texas, Louisiana, Mississippi

Delta is a Category 3 storm heading for a Gulf Coast landfall later Friday. As expected, Delta intensified again over warmer Gulf of Mexico water Thursday and it appears to be leveling off in strength. Delta's center is currently about 200 miles south of Cameron, Louisiana, moving north at 10 to 15 mph.
 
Advisories
Hurricane Warning
  • High Island, TX, to Morgan City, LA
  • Includes Lake Charles and Lafayette, LA and Port Arthur, TX
Storm Surge Warning
  • High Island, TX, to the Pearl River, LA
  • Includes Calcasieu Lake, Vermilion Bay and Lake Borgne. 
Tropical Storm Warning
  • Sargent to west of High Island, TX
  • East of Morgan City, LA, to the mouth of the Pearl River, 
  • Includes New Orleans.
Surge
The highest storm surge is expected in parts of south-central Louisiana
  • Immediate Gulf Coast
  • Bays, inlets, inland rivers and bayous
  • Southeast LA, including along Lake Pontchartrain
  • Along the MS, AL, and upper TX coasts
  • 7-11ft inundation expected
In some of these areas, flooding may take days to recede
 
Winds
The strongest winds with Delta will be seen at landfall as the eyewall moves ashore today into Saturday
  • Much of Louisiana
  • Extreme eastern Texas
  • Mississippi and southern Arkansas
Rainfall
Heavy rainfall is still expected, particularly along and to the east of its path.
  • 5-10in up to 15 in southwest and central LA
  • 3-6in up to 10 in extreme eastern TX, northern LA, southern AR, and western MS
Some locally heavy rainfall will also spread into the Ohio Valley, Southeast and mid-Atlantic this weekend.
 
Tornadoes
As Delta moves inland, there will be a chance of tornadoes in the outer rainbands
  • Southeast LA and southern MS through tonight
  • North Gulf Coast through Tennessee Valley on Saturday
Delta's landfall will be a record 10th landfalling hurricane or tropical storm in the U.S. this season, which will break the previous record of nine such landfalls in a season that had stood since 1916. It will also be the fourth Louisiana landfalling storm of 2020, tying 2002 for the record most in any season in the Pelican State, and it will be the first time in 134 years that two hurricanes impacted western Louisiana in the same year.

Topics: weather

Weather Update 10.8.20 - U.S.

Posted by Jarrett on Oct 8, 2020 8:31:37 AM


Hurricane Delta is now a Category 2 Storm with maximum sustained winds of 100 mph, moving northwestward at about 15 mph. Delta is expected to grow in size as it approaches the northern Gulf Coast, and is still forecast to be a formidable hurricane at landfall. Storm surge and hurricane-force winds are likely beginning Friday, particularly for portions of the Louisiana Coast. Significant flooding is also likely from the central Gulf Coast into the lower Mississippi Valley. As Delta moves further inland, heavy rainfall will develop in the Ohio Valley and Mid Atlantic. States with Active Advisories: Texas, Louisiana, Mississippi

Advisories

Hurricane Warning

  • East of Sabine Pass, TX to Morgan City, LA
  • Includes Lake Charles and Lafayette
  • Expected in this area by Friday afternoon
Tropical Storm Warning
  • San Luis Pass to Sabine Pass, TX
  • East of Morgan City, LA, to the mouth of Pearl River
  • Includes New Orleans, and Lakes Pontchartrain and Maurepas
Tropical Storm Watch
  • East of the Pearl River mouth to Bay St. Louis, MS
Storm Surge Warning
  • Sabine Pass, TX, to Ocean Springs, MS
  • Includes Calcasieu Lake, Vermilion Bay, Lake Pontchartrain, Lake Maurepas, and Lake Borgne
Storm Surge Watch
  • High Island, TX, to Sabine Pass, TX
  • East of Ocean Springs, MS, to the MS-AL border
 
Winds
Delta's strongest winds will occur as the eyewall moves ashore
  • Expected near the LA coast
 
Storm Surge
Swells generated by Delta should begin to arrive along the Gulf Coast from South TX to the FL Panhandle and even western FL today
  • Highest storm surge is expected in parts of south-central LA
  • Impacts also expected in bays, inlets, rivers, and bayous
  • Inundation could reach 7 to 11 feet above ground in these areas
 
Flooding Rainfall
Heavy rainfall is expected particularly along and to the east of Delta's path
  • 5-10 inches up to 15 in southwest and south-central LA
  • 3-6 inches up to 10 in eastern TX, southern AR and western MS
  • Rain will spread into the Ohio Valley, Southeast and mid-Atlantic this weekend
 
Tornadoes
There's also a threat of isolated tornadoes from Delta
  • Southeast LA and southern MS
  • Thursday Night and Friday
 
Delta is the 25th named storm and the ninth hurricane of the 2020 Atlantic hurricane season
 

Topics: weather

Weather Update 10.7.20 - U.S.

Posted by Jarrett on Oct 7, 2020 7:46:50 AM


Hurricane Delta is forecast to move into the Gulf of Mexico by late Wednesday and may bring significant hazards from Louisiana to the Florida panhandle beginning Thursday night or Friday. Meanwhile, dry and gusty conditions will result in critical fire weather conditions from the northern and central Rockies into the Plains. Mainly tranquil weather is expected elsewhere. Potential Impacts: Texas, Louisiana, Florida

Delta is currently a Category 3 storm, with 115mph sustained winds. While its exact track is not certain, several hazards are anticipated. 

Flooding Rainfall

Flash, Urban, and Small Stream flooding likely Friday through Saturday across portions of the central Gulf Coast north into portions of the Lower Mississippi Valley. The heavy rainfall will spread northeastward into the Tennessee Valley and interior southeastern United States this weekend into early next week. 

Storm Surge
Increasing likelihood of storm surge and hurricane-force winds, especially along the coasts of Louisiana and Mississippi, beginning on Friday.

 

Storm Surge and Hurricane watches will likely be issued for portions of the northern Gulf Coast later today.

 

 

Topics: weather

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