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 >
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 842 PM CDT MON OCT 1 2007 ...TEMPERATURES AVERAGED ABOVE NORMAL IN SEPTEMBER... PRECIPITATION FOR THE MONTH VARIED WIDELY...FROM WELL BELOW NORMAL TO ABOVE NORMAL. THE MONTLY PRECIPITATION VARIED CONSIDERABLY NOT ONLY ACROSS THE REGION...BUT ACROSS INDIVIDUAL COUNTIES. THIS WAS DUE TO THE WIDELY SCATTERED TYPE OF COVERAGE WITH THE SHOWERS AND STORMS WHICH CONTAINED LOCALLY HEAVY RAINFALL. THESE OCCURRED ON SEVERAL DAYS DURING THE MONTH...BUT NO SIGNIFICANT WET WEATHER SYSTEMS AFFECTED THE AREA ON A LARGER SCALE. THE BELOW NORMAL PRECIPITATION COVERED A LARGER PART OF WEST CENTRAL TEXAS THAN THE ABOVE NORMAL PRECIPITATION. TOTAL MONTHLY RAINFALL WAS LESS THAN 25 PERCENT OF NORMAL IN POCKETS OF WEST CENTRAL TEXAS...MOST NOTABLY ACROSS THE NORTHERN CONCHO VALLEY AND SOUTHERN BIG COUNTRY. THE GREATEST PRECIPITATION OCCURRED ACROSS POCKETS OF FAR EASTERN AND SOUTHERN SECTIONS OF WEST CENTRAL TEXAS. AT ABILENE REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR SEPTEMBER WAS 77.4 DEGREES. THIS WAS 1.9 DEGREES ABOVE THE NORMAL AVERAGE TEMPERATURE OF 75.5 DEGREES. TOTAL PRECIPITATION FOR SEPTEMBER WAS 1.21 INCHES. THIS WAS 1.70 INCHES BELOW THE MONTHLY NORMAL OF 2.91 INCHES. AT SAN ANGELO REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR SEPTEMBER WAS 76.8 DEGREES. THIS WAS 2.0 DEGREES ABOVE THE NORMAL AVERAGE TEMPERATURE OF 74.8 DEGREES. TOTAL PRECIPITATION FOR SEPTEMBER WAS 2.55 INCHES. THIS WAS 0.40 INCHES BELOW THE MONTHLY NORMAL OF 2.95 INCHES. SEPTEMBER 2007 WEATHER HIGHLIGHTS... EARLY IN THE MONTH...AN UPPER LEVEL DISTURBANCE OVER THE REGION INTERACTED WITH A MOIST AIRMASS AND GENERATED SCATTERED SHOWERS AND THUNDERSTORMS ACROSS ROUGHLY THE SOUTHEASTERN HALF OF WEST CENTRAL TEXAS. THE COVERAGE WAS GREATEST ON THE 4TH. SOUTHEAST OF A LINE FROM BROWNWOOD TO SONORA...RAINFALL AMOUNTS OF ONE HALF TO ONE INCH OCCURRED...WITH SCATTERED POCKETS OF 1 TO 3 INCH AMOUNTS. SCATTERED SHOWERS AND THUNDERSTORMS OCCURRED ACROSS WEST CENTRAL TEXAS ON THE 9TH AND 10TH...AS A COLD FRONT MOVED SOUTH ACROSS THE REGION. SCATTERED LOCATIONS RECEIVED ONE HALF TO ONE INCH OF RAIN...BUT LOCALLY HIGHER TOTALS OF 1 TO 3 INCHES WERE RECEIVED AT A FEW LOCATIONS. COOLER AND SOMEWHAT DRIER AIR SETTLED SOUTH INTO THE REGION AFTER THE COLD FRONTAL PASSAGE. HIGH TEMPERATURES WERE IN THE 70S ON THE 11TH...AND EARLY MORNING LOWS WERE IN THE 50S ACROSS THE AREA ON THE 12TH. DURING MOST OF THE MIDDLE AND LATE PARTS OF SEPTEMBER...HIGH PRESSURE SYSTEMS ALOFT DEVELOPED OVER TEXAS AND BROUGHT A GENERALLY WARM AND DRY WEATHER PATTERN TO THE REGION. A COUPLE OF WEAK DISTURBANCES ALOFT BROUGHT A FEW SHOWERS AND STORMS ON THE 18TH AND 19TH...BUT THE COVERAGE WAS RELATIVELY SPARSE. A FEW LOCATIONS ACROSS SOUTHERN AND EASTERN PARTS OF WEST CENTRAL TEXAS RECEIVED 1 TO 2 INCHES OF RAINFALL. THE TRAILING PORTION OF A WEAK COLD FRONT DROPPED SOUTH INTO WEST CENTRAL TEXAS ON THE 25TH...BEFORE STALLING AND WASHING OUT ON THE 26TH. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS OCCURRED IN THE VICINITY OF THIS FRONT. LATE ON THE 26TH...A SMALL CLUSTER OF THUNDERSTORMS DROPPED SOUTHEAST INTO THE BIG COUNTRY...BRINGING LOCALLY HEAVY RAIN AND GUSTY WINDS. THE ABILENE REGIONAL AIRPORT RECORDED A PEAK WIND GUST OF 43 MPH FROM THESE STORMS. ADDITIONAL WIDELY SCATTERED SHOWERS AND STORMS CONTINUED ON THE 27TH. ON THE 29TH...A FLOW OF GULF MOISTURE AROUND THE WESTERN PERIPHERY OF THE HIGH PRESSURE SYSTEM ENTERED THE REGION AND RESULTED IN WIDELY SCATTERED SHOWERS AND THUNDERSTORMS. THESE OCCURRED ACROSS THE SOUTHERN HALF OF WEST CENTRAL TEXAS. ALTHOUGH THE COVERAGE WAS LOW WITH THE SHOWERS AND STORMS WHICH OCCURRED LATE IN THE MONTH... WIDELY SCATTERED LOCATIONS NORTHWEST OF A BROWNWOOD TO OZONA LINE RECEIVED 1 TO 2 INCH RAINFALL AMOUNTS. $$