A strong, long-duration atmospheric river will bring excessive rainfall, flash flooding, and very strong winds to southwest Oregon and northwest California through Thursday. A High Risk (level 4 of 4) of Excessive Rainfall has been issued. A storm system over the northern Plains will produce locally heavy snow in North Dakota and northwestern Minnesota. Read More >
...TEMPERATURES AND PRECIPITATION WERE SLIGHTLY ABOVE NORMAL FOR WEST CENTRAL TEXAS IN DECEMBER... AT ABILENE REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR DECEMBER WAS 46.2 DEGREES. THIS WAS 0.8 DEGREES ABOVE THE NORMAL AVERAGE TEMPERATURE OF 45.4 DEGREES. TOTAL PRECIPITATION FOR ABILENE IN DECEMBER WAS 1.33 INCHES. THIS WAS 0.06 INCHES ABOVE THE MONTHLY NORMAL OF 1.27 INCHES. AT SAN ANGELO REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR DECEMBER WAS 46.7 DEGREES. THIS WAS 0.3 DEGREES ABOVE THE NORMAL AVERAGE TEMPERATURE OF 46.4 DEGREES. TOTAL PRECIPITATION FOR SAN ANGELO IN DECEMBER WAS 1.37 INCHES. THIS WAS 0.43 INCHES ABOVE THE MONTHLY NORMAL OF 0.94 INCHES. DECEMBER 2002 WEATHER HIGHLIGHTS... AN UPPER LEVEL LOW PRESSURE SYSTEM BROUGHT RAIN TO WEST CENTRAL TEXAS EARLY IN THE MONTH...WITH A FEW THUNDERSTORMS IN THE NORTHWEST HILL COUNTRY. MOST OF THE RAIN OCCURRED ON THE 2ND AND 3RD. RAINFALL TOTALS GENERALLY RANGED FROM 0.30 TO 0.80 INCHES...BUT OVER AN INCH WAS RECEIVED IN HASKELL COUNTY. THE PRECIPITATION ENDED IN SOME LIGHT SNOW OVER THE BIG COUNTRY...BUT WITH NO ACCUMULATION. AN UPPER LEVEL LOW PRESSURE SYSTEM BROUGHT NUMEROUS SHOWERS TO WEST CENTRAL TEXAS ON THE 8TH AND 9TH. RAINFALL AMOUNTS OF ONE HALF TO ONE INCH WERE COMMON IN THE BIG COUNTRY AND NORTHWEST HILL COUNTRY...WITH LESSER AMOUNTS ELSEWHERE. SOME LOCATIONS IN THE BIG COUNTRY RECEIVED OVER AN INCH. A DRY...FAIRLY TRANQUIL WEATHER PATTERN FOLLOWED THROUGH THE MIDDLE OF DECEMBER. AN UPPER LEVEL DISTURBANCE BROUGHT SCATTERED LIGHT RAINSHOWERS TO THE BIG COUNTRY ON THE EVENING OF THE 18TH. LATE IN THE MONTH...A STRONG UPPER LEVEL STORM SYSTEM MOVED OUT OF THE SOUTHWESTERN STATES AND ACROSS TEXAS ON THE 23RD INTO THE 24TH. THIS SYSTEM BROUGHT SHOWERS AND THUNDERSTORMS TO MUCH OF THE REGION. THE SHOWERS AND STORMS WERE MOST NUMEROUS TO THE SOUTHEAST OF A LINE FROM BAIRD TO SAN ANGELO TO SONORA...WHERE WIDELY SCATTERED RAINFALL AMOUNTS OF 1.00 TO 1.50 INCHES OCCURRED. SOME OF THE STORMS OVER THE HEARTLAND AND NORTHWEST HILL COUNTRY CONTAINED HAIL...AND THE FALL OF HAIL WAS ENOUGH TO COVER THE GROUND AND CAUSE SLICK ROADWAYS AT SOME LOCATIONS. THE LARGEST HAIL REPORTED WAS DIME SIZE AT MASON. AS COLDER AIR FILTERED INTO THE REGION FROM THE NORTH...A LITTLE LIGHT SNOW FELL OVER PARTS OF THE BIG COUNTRY DURING THE OVERNIGHT HOURS OF THE 23RD AND 24TH. A LIGHT DUSTING OF SNOW WAS REPORTED IN THROCKMORTON AND SHACKELFORD COUNTIES. ON THE 30TH...A VIGOROUS UPPER LEVEL DISTURBANCE AND COLD FRONT HELPED TO TRIGGER SCATTERED THUNDERSTORMS OVER EASTERN SECTIONS OF THE REGION...MAINLY EAST OF A LINE FROM THROCKMORTON TO JUNCTION. RAINFALL AMOUNTS OF ONE HALF TO ONE INCH OCCURRED AT A FEW LOCATIONS. A COUPLE OF STORMS BECAME SEVERE...PRODUCING NICKEL SIZE HAIL AT ALGERITA (IN SAN SABA COUNTY) AND WALNUT SIZE HAIL 7 MILES SOUTH OF HEXT (IN MENARD COUNTY). GUSTY WEST WINDS FOLLOWED THE COLD FRONTAL PASSAGE...AND A PEAK GUST OF 41 MPH WAS RECORDED AT THE SAN ANGELO REGIONAL AIRPORT.