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Old February 10th 17, 04:57 PM posted to sci.geo.meteorology
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Default January 2017 National Weather Summary

NATIONAL WEATHER SUMMARY

JANUARY 2017

1-7: Thunderstorms will continue along the North Carolina coast Tuesday morning ahead of a cold front. Light to moderate snow will begin to taper off across northern Minnesota, as an area of low pressure moves eastward toward the Great Lakes. Scattered thunderstorms will continue to develop across the Carolinas along and ahead of a cold front this morning. A few strong thunderstorms contained gusty winds. Light to moderate snow will continue across Minnesota this morning. Total snow accumulations of 4-8 inches, with locally higher amounts in excess of 12 inches, are forecast. As an area of low pressure moves northeastward into the Northeast, wintry precipitation is likely. A large area of rain and freezing rain will move over the region early Tuesday afternoon. Significant ice accumulation is likely, especially in elevations above 1500 feet. Ice accumulations up to a quarter of an inch are possible, but most areas will receive around a tenth of an inch. Across areas of New Hampshire and Maine, snow accumulations of 1-2 inches are forecast in addition to up to a tenth of an inch of ice and 1-2 inches of sleet.. For northern portions of Maine, 4-8 inches of snow are expected, in addition to up to two tenths of an inch and 1-2 inches of sleet.

Snow will continued to fall across the Northeast on Wednesday as an area of low pressure tracks northeastward. An area of low pressure over the Intermountain West caused light to moderate snow across the Central Rockies Wednesday. An area of low pressure will continue to track into the Northeast through the day on Wednesday, bringing wintry precipitation to the region. Light snow will continue to spread over Northern Maine and increase in intensity. Snow will taper off from west to east Wednesday afternoon as a cold front moves through the region. Heavy snow persisted over the central Rockies. Further south, a cold front will push through during the morning hours and spread the threat for heavy snow into the higher terrain of New Mexico.

Low pressure developed off the Mid-Atlantic Coast and produced snow from the Carolinas to southern New England On Friday. The heaviest snow fell across the Carolinas. Snow also fell across portions of Texas and Oklahoma. Another system developing in the Gulf of Mexico caused rain along the Gulf Coast with mixed precipitation extending into Georgia. High pressure kept the West dry and cold with temperatures below zero across the upper Mississippi Valley and sections of the Rockies and teens elsewhere in the West. Wind chills in the region were below zero in spots. Temperature extremes at 2pm ranged from 81F at Stuart, FL and -29 at Pinedale, WY.

8-14: A massive storm system stretching from California into Nevada lifted rivers climbing out of their banks, flooded vineyards and forced people to evacuate after warnings that hillsides parched by wildfires could give way to mudslides on Monday. Snow and fell across the upper Mississippi Valley and sections of the Southwest. High pressure in the East kept the region cold and dry. Temperatures ranged from the single digits across Maine to the 40s across the Carolinas for highs. Florida reached the 70s. Temperatures at 1pm ranged from 82F at San Pasual, CA to -29F at 1 mile north northwest of Masardis, ME.

A system moving through the West caused heavy rain and snow across portions of the West Coast on Wednesday. A cold front moving through the Midwest brought snow to the Great Lakes. Its warm front cause rain from the Ohio Valley and the Mid-Atlantic. Temperatures warmed into the 40s in the East. Cold air spread into the northern Rockies and the upper Mississippi Valley with temperatures low zero and the single digits with wind chils below zero. Winds gusted to 48 MPH at Mt Washington, NH. Temperatures at 6pm EST ranged from at 81F at Cotulla Municipal Airport to -20F Hallock, MN.

High pressure kept the Northwest dry Friday. Temperatures ranged from 11F at Pendleton, Ore. to 43F at Medford. A system moving into the Southwest cased some rain. Cold high pressure moved into the upper Mississippi Valley and eth Great Lakes. Highs were in the teens to the 20s. An ice storm bearing down on the Plains and Midwest making for slippery and potentially dangerous conditions will expand into the Mid-Atlantic. A stalled cold front is stretched from the southern Plains to the Carolinas while a fresh Canadian high pressure is funneling cold air north of the boundary across much of the Mid-Atlantic.Temperatures ranged from 97F at Kaunakakai, HI to -33F at Kaltag, AK.

15-21: A system in the Midwest caused snow and freezing rain from the Plains and the Midwest on Monday as an upper level system continues to slowly move across the region. High pressure provided a break in storms for the Northwest and the Northeast. Temperatures were in the 30s in the Northeast and the 60s in the Southeast. The upper Mississippi Valley and the Rockies were in the teens to low 30s. Temperatures at 6pm ranged from 86F at Falfurrias, TX to -37F at Stanley, ID.

Low pressure developing over Eastern Texas and the lower Mississippi Valley caused showers and thunderstorms over parts of the Western Gulf Coast and the Lower Mississippi Valley on Wednesday. In addition, upper-level energy over northern New England produce rain and higher elevation snow over parts of the Northeast. A system moving into the West Coast caused rain and snow. High pressure kept the Rockies dry. A cyclonic flow in the across the Great Lakes into the Mid-Atlantic caused overcast skies and light rain. Temperatures ranged from 85F at Marathon, FL to -17F Big Piney, WY.

A dangerous weather in the South on Friday, threatening the Gulf Coast and Southeast with heavy rain, damaging wind, hail and maybe even tornadoes. A spring-like storm system sweeping across the Gulf Coast is drawing moisture from the Gulf of Mexico. The moisture paired with warm air ahead of the system. As the system interacted with humid air across the Gulf Coast and fire off clusters of intense thunderstorms this afternoon from extreme eastern Texas to Florida's Atlantic Coast. The system caused heavy rain with more than 3 inches of rain possible across the Southeast and Gulf Coast. A Pacific system approached the West Coast and caused precipitation up and down the West Coast. High pressure kept the Rockies dry. A warm front lifting north across the Mid-Atlantic caused overcast skies.
Temperatures at 1PM ranged from 85F at Opa Locka, FL to -7 at Big Piney, WY..

22-31: A strong low off the Mid-Atlantic Coast and high pressure near Canada caused overcast skies and strong winds and rain along the Northeast and Mid-Atlantic Coast on Monday. Wind gust reached 46 MPH at La Guardia Airport..

A system approaching the West Coast brought rain to California. National weather service doppler radars and surface Observations indicated moderate to heavy rainfall was impacting central and southern California and portions of southern Nevada. There were also thunderstorms moving over southern California. Scattered rain showers were also occurred across the Southwest and the valleys of the Intermountain West. Moderate to heavy snow fell in the Sierras of California, with light to moderate snow across the Intermountain West, and higher elevations of the Southwest. Temperatures ranged from 87F at Fort Pierce, FL to -4F at Butte, MT.

A low pressure system currently lifting northeast across the Great Lakes region is brought a wintry mix of precipitation from Iowa to northern Michigan, and showers across parts of the Ohio Valley on Wednesday. Winter storm warnings and winter weather advisories remain in effect for parts of this region. The trailing frontal boundary caused rain and storms from the South into the Mid-Atlantic. High pressure continued to steadily build over the West deflecting storms to the north and giving the West a break in storms. Temperatures ranged from 86F at Brownsville, TX to -26F at Stanley, ID.

Strong northwest flow has taken hold across much of the central and eastern continental U.S. on Friday. Generally dry and benign weather covered the region. However, scattered snow showers occurred across the Great Lakes into the central Appalachians. A large dome of high pressure covered the West with cold temperatures. Temperatures ranged from the 20s to the 30s with teens in the central Rockies. Temperatures ranged from 85F at Miami, FL to -39F at Antero Reservoir, CO.

High pressure over the Rockies resulted in fair weather on Monday. Precipitation fell in the Northwest. Most of the precipitation was light however, heavier amounts fell in northwest Washington. A clipper system moving across the upper Mississippi Valley produced light snow. Temperatures were in the 20s and 30s from the Rockies to the upper Mississippi Valley. Temperatures were in eth 40s and 50s across the southern Plains and along eth West Coast.
Temperatures ranged from 83 at Santa Ana, CA to -19 at Gunnison, CO.







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