Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Pictures from around western Colorado and eastern Utah

SURFACE | UPPER AIR | CAMERAS | WINTER DATA | ROAD CONDITIONS

Upper Air Data

Raw Data
Grand Junction	Denver	Salt Lake City	Albuquerque	Riverton	Flagstaff	Tucson
Mandatory	Mandatory	Mandatory	Mandatory	Mandatory	Mandatory	Mandatory
Significant	Significant	Significant	Significant	Significant	Significant	Significant
Freezing	Freezing	Freezing	Freezing	Freezing	Freezing	Freezing
Above 100mb	Above 100mb	Above 100mb	Above 100mb	Above 100mb	Above 100mb	Above 100mb
Summary	Summary	Summary	Summary	Summary	Summary	Summary

Skew-T Diagrams
Grand Junction	Denver	Salt Lake City	Albuquerque	Riverton	Flagstaff	Tucson
NCAR	NCAR	NCAR	NCAR	NCAR	NCAR	NCAR
DuPage	DuPage	DuPage	DuPage	DuPage	DuPage	DuPage
Soundings also available at: SPC \| NOAA/FSL \| U of Wyoming \| College of DuPage \| Ohio State

Profilers
Aztec, NM	Granada, CO	Platteville-1, CO	Platteville-2, CO	Medicine Bow, WY	White Sands, NM	NWS NPN
AZCN5	GDAC2	PLTCO	PLTC2	MBWW4	WSMN5	Other Sites

Charts
	925 mb	850 mb	700 mb	500 mb	300 mb	250 mb
SPC	12z \| 00z	12z \| 00z	12z \| 00z	12z \| 00z		12z \| 00z
NCAR / RAP		Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con
U of Wyoming	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con
DuPage	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P

Con = Contoured Chart w/P = with Profiler data

Picture of a upper air balloon and inflation shelter

Picture of upper air ballon prepared for launch

(Click on image for a larger picture)

Additional Information & Terms

Upper-Air Program Virtual Tour From the Reno, NV National Weather Service Weather Forecast Office
National Upper Air page
NWS Acronyms

GJT RSS Feed

Charts
	925 mb	850 mb	700 mb	500 mb	300 mb	250 mb
SPC	12z \| 00z	12z \| 00z	12z \| 00z	12z \| 00z		12z \| 00z
NCAR / RAP		Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con
U of Wyoming	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con	Raw \| Con
DuPage	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P	Raw \| w/P

Con = Contoured Chart w/P = with Profiler data