The WPC has highlighted a high risk area of excessive precipitation in Southern California for Wednesday as a multi-day rainfall event is underway. There is a risk of flooding and landslides, as well as rockslides. Feets of snow could fall this week in Sierra Nevada Mountains.
TT
December 23, 2025 at 6:54 PM
The WPC has highlighted a high risk area of excessive precipitation in Southern California for Wednesday as a multi-day rainfall event is underway. There is a risk of flooding and landslides, as well as rockslides. Feets of snow could fall this week in Sierra Nevada Mountains.
Much of California is under flood watches as yet another atmospheric river event gets underway. In addition to heavy rain, heavy snow is possible at higher elevations. Shown is an NDFD forecast of total precipitation in California through Thursday morning.
TT
December 22, 2025 at 7:22 PM
Much of California is under flood watches as yet another atmospheric river event gets underway. In addition to heavy rain, heavy snow is possible at higher elevations. Shown is an NDFD forecast of total precipitation in California through Thursday morning.
Widespread winds are continuing in parts of the Plains and the Rockies with whiteout conditions possible in the northern Plains. Meanwhile, a new atmospheric river is expected to impact the Pacific Northwest with additional heavy precipitation and flooding risk.
TT
December 18, 2025 at 6:03 PM
Widespread winds are continuing in parts of the Plains and the Rockies with whiteout conditions possible in the northern Plains. Meanwhile, a new atmospheric river is expected to impact the Pacific Northwest with additional heavy precipitation and flooding risk.
It is a very windy day in the northwestern US today as a powerful storm is bringing stormy winds to a wide area. As the day progresses, the high winds will be moving from the Pacific Northwest towards the northern Plains, as illustrated by this scenario from the HRRR model.
TT
December 17, 2025 at 6:04 PM
It is a very windy day in the northwestern US today as a powerful storm is bringing stormy winds to a wide area. As the day progresses, the high winds will be moving from the Pacific Northwest towards the northern Plains, as illustrated by this scenario from the HRRR model.
A series of areas of low pressure is expected to bring heavy rain and mountain snow to the Pacific Northwest this week. The first of the systems is expected to arrive tonight.
TT
December 16, 2025 at 3:14 PM
A series of areas of low pressure is expected to bring heavy rain and mountain snow to the Pacific Northwest this week. The first of the systems is expected to arrive tonight.
Shown is an NDFD forecast of maximum air temperature today across the continental USA. Particularly low temperatures are expected in the Midwest and the Northeast.
TT
December 15, 2025 at 5:16 PM
Shown is an NDFD forecast of maximum air temperature today across the continental USA. Particularly low temperatures are expected in the Midwest and the Northeast.
Shown is an NDFD forecast of rainfall until 10 AM PST on Friday for Washington. An atmospheric river that has been causing heavy precipitation in the Pacific Northwest is winding down but the lingering rain is expected to exacerbate the already serious flooding situation.
TT
December 11, 2025 at 7:13 PM
Shown is an NDFD forecast of rainfall until 10 AM PST on Friday for Washington. An atmospheric river that has been causing heavy precipitation in the Pacific Northwest is winding down but the lingering rain is expected to exacerbate the already serious flooding situation.
An atmospheric river is continuing to cause heavy precipitation in the Northwest where flooding is also occurring. Meanwhile, winter weather is expected in the northeastern US from a clipper. Shown is a GFS scenario of sea level air pressure and precipitation type.
TT
December 10, 2025 at 6:21 PM
An atmospheric river is continuing to cause heavy precipitation in the Northwest where flooding is also occurring. Meanwhile, winter weather is expected in the northeastern US from a clipper. Shown is a GFS scenario of sea level air pressure and precipitation type.
Shown is an NWS NDFD forecast of expected snowfall and total precipitation through 6 AM CST on Friday as an atmospheric river is expected to result in heavy rain in the Pacific Northwest and snow in the northern Rockies during the coming days.
TT
December 9, 2025 at 7:07 PM
Shown is an NWS NDFD forecast of expected snowfall and total precipitation through 6 AM CST on Friday as an atmospheric river is expected to result in heavy rain in the Pacific Northwest and snow in the northern Rockies during the coming days.
Flood watches have been issued in southern California as an atmospheric river is expected to bring heavy rain and mountain snow through the weekend. The rainfall could result in flooding and debris flows. Shown is an MRMS radar composite of southern California.
TT
November 14, 2025 at 6:54 PM
Flood watches have been issued in southern California as an atmospheric river is expected to bring heavy rain and mountain snow through the weekend. The rainfall could result in flooding and debris flows. Shown is an MRMS radar composite of southern California.
Shown is an HRRR scenario of sea level air pressure and precipitation type for California as a strong cyclone and an atmospheric river are expected to bring heavy rain and mountain snowfall, as well as high winds to parts of the state through Saturday.
TT
November 13, 2025 at 5:15 PM
Shown is an HRRR scenario of sea level air pressure and precipitation type for California as a strong cyclone and an atmospheric river are expected to bring heavy rain and mountain snowfall, as well as high winds to parts of the state through Saturday.
With the auroras making the news again, here's a GFS scenario of total cloud cover for the continental US valid 10 PM EST tonight. Blue colors indicate less cloudiness.
TT
November 12, 2025 at 5:16 PM
With the auroras making the news again, here's a GFS scenario of total cloud cover for the continental US valid 10 PM EST tonight. Blue colors indicate less cloudiness.
Air temperatures well below climatological average are expected over the next few days in the eastern US as far south as Florida. Shown here is a GFS scenario of anomaly temperature(difference of forecast temperature from climatological average) over the next few days.
TT
November 10, 2025 at 5:23 PM
Air temperatures well below climatological average are expected over the next few days in the eastern US as far south as Florida. Shown here is a GFS scenario of anomaly temperature(difference of forecast temperature from climatological average) over the next few days.
Shown is an ECMWF scenario of sea level air pressure in the Philippines until Sunday at 12 UTC (8 PM local) as typhoon Fung-wong(Uwan in Philippines) is expected to quickly intensify and make a landfall as a very strong typhoon on Sunday.
TT
November 7, 2025 at 7:39 PM
Shown is an ECMWF scenario of sea level air pressure in the Philippines until Sunday at 12 UTC (8 PM local) as typhoon Fung-wong(Uwan in Philippines) is expected to quickly intensify and make a landfall as a very strong typhoon on Sunday.
More tropical trouble in store for the Philippines. Severe Tropical Storm Fung-wong is expected to make a landfall in northern Philippines as a very strong typhoon early Monday. Shown is a comparison of EPS scenarios for the future track of Fung-wong's center of circulation.
TT
November 6, 2025 at 7:28 PM
More tropical trouble in store for the Philippines. Severe Tropical Storm Fung-wong is expected to make a landfall in northern Philippines as a very strong typhoon early Monday. Shown is a comparison of EPS scenarios for the future track of Fung-wong's center of circulation.
Shown is an NDFD forecast of total precipitation through noon CST on Friday as an atmospheric river is expected to continue bringing rainfall and mountain snow to the western US.
TT
November 5, 2025 at 7:17 PM
Shown is an NDFD forecast of total precipitation through noon CST on Friday as an atmospheric river is expected to continue bringing rainfall and mountain snow to the western US.
An atmospheric river is expected to impact the Northwest, bringing a risk of moderate to heavy rainfall and mountain snow through Wednesday. Shown is a GFS scenario of 3-hourly precipitation type and sea level pressure for 4 AM PST on Wednesday.
TT
November 4, 2025 at 7:27 PM
An atmospheric river is expected to impact the Northwest, bringing a risk of moderate to heavy rainfall and mountain snow through Wednesday. Shown is a GFS scenario of 3-hourly precipitation type and sea level pressure for 4 AM PST on Wednesday.
In Asia, a typhoon Kalmaegi (local name: Tino) is currently passing through the Philippines and is expected to impact Vietnam later in the week. Shown is a scenario of sea level pressure from the 12 UTC ECMWF run for the coming days.
TT
November 3, 2025 at 7:00 PM
In Asia, a typhoon Kalmaegi (local name: Tino) is currently passing through the Philippines and is expected to impact Vietnam later in the week. Shown is a scenario of sea level pressure from the 12 UTC ECMWF run for the coming days.
A sneak peek into trick and treating weather. Shown is a GFS scenario of 6 hour rain for 8 PM EDT on Friday. It will be dry across the most of the lower 48, with notable exceptions being the northeastern and the far northwestern parts of CONUS.
TT
October 30, 2025 at 7:08 PM
A sneak peek into trick and treating weather. Shown is a GFS scenario of 6 hour rain for 8 PM EDT on Friday. It will be dry across the most of the lower 48, with notable exceptions being the northeastern and the far northwestern parts of CONUS.
After a historic landfall in Jamaica, hurricane Melissa is expected to emerge again over the Caribbean in a few hours and make a landfall in Cuba tonight also as a major hurricane, then proceed towards the Bahamas.
Shown is a wind scenario from ECMWF through Thursday morning.
TT
October 28, 2025 at 6:32 PM
After a historic landfall in Jamaica, hurricane Melissa is expected to emerge again over the Caribbean in a few hours and make a landfall in Cuba tonight also as a major hurricane, then proceed towards the Bahamas.
Shown is a wind scenario from ECMWF through Thursday morning.
Category 5 hurricane Melissa is expected to make landfall in Jamaica on Tuesday as the strongest hurricane in Jamaica's recorded history. It is then expected to head towards Cuba, Turks and Caicos, Bahamas and possibly also Bermuda.
TT
October 27, 2025 at 5:34 PM
Category 5 hurricane Melissa is expected to make landfall in Jamaica on Tuesday as the strongest hurricane in Jamaica's recorded history. It is then expected to head towards Cuba, Turks and Caicos, Bahamas and possibly also Bermuda.