WFO San Angelo Climatology

SEPTEMBER 2010 WEATHER SUMMARY FOR WEST-CENTRAL TEXAS

...NINTH WARMEST SEPTEMBER ON RECORD AT SAN ANGELO...                                                                                                                                                                                                        
TEMPERATURES AVERAGED ABOVE NORMAL FOR SEPTEMBER. A
RECORD HIGH MINIMUM TEMPERATURE WAS SET AT ABILENE ON THE
10TH AND TIED ON THE 1ST. AT SAN ANGELO...A RECORD HIGH
MINIMUM TEMPERATURE WAS SET ON THE 10TH. IN ADDITION...RECORD
HIGH MINIMUM TEMPERATURES WERE TIED AT SAN ANGELO ON THE
12TH...15TH...AND 24TH.                                                                                                                                                                                                                                                                               

PRECIPITATION VARIED FROM WELL ABOVE TO WELL BELOW NORMAL
ACROSS WEST CENTRAL TEXAS IN SEPTEMBER. THE MONTHLY TOTALS
WERE WELL ABOVE NORMAL ACROSS MUCH OF THE AREA NORTH OF A
LINE FROM BIG SPRING TO BALLINGER TO COLEMAN...AND TO THE
EAST OF A LINE FROM COLEMAN TO BRADY TO MASON. THESE AREAS
RECEIVED MORE THAN 5 INCHES OF RAINFALL...WITH 6 TO 10
INCHES AT SCATTERED LOCATIONS WITHIN THESE AREAS. A FEW
LOCATIONS IN THE CENTRAL AND NORTHERN BIG COUNTRY RECEIVED
OVER 10 INCHES.

THE MONTHLY AMOUNTS WERE BELOW NORMAL ACROSS MOST OF THE
SOUTHERN CONCHO VALLEY...NORTHERN EDWARDS PLATEAU...AND
THE WESTERN HALF OF MENARD AND KIMBLE COUNTIES. SCATTERED
LOCATIONS ACROSS IRION...CROCKETT...SCHLEICHER AND SUTTON
COUNTIES RECEIVED LESS THAN 25 PERCENT OF THE NORMAL
SEPTEMBER PRECIPITATION.

AT ABILENE REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR
SEPTEMBER WAS 77.8 DEGREES. THIS WAS 2.3 DEGREES ABOVE THE
NORMAL AVERAGE TEMPERATURE OF 75.5 DEGREES. TOTAL PRECIPITATION
FOR SEPTEMBER WAS 2.44 INCHES. THIS WAS 0.47 INCHES BELOW THE
MONTHLY NORMAL OF 2.91 INCHES.

AT SAN ANGELO REG5ONAL AIRPORT...THE AVERAGE TEMPERATURE FOR
SEPTEMBER WAS 79.7 DEGREES. THIS WAS 4.9 DEGREES ABOVE THE
NORMAL AVERAGE TEMPERATURE OF 74.8 DEGREES. THIS MARKS THE
WARMEST SEPTEMBER ON RECORD AT SAN ANGELO. TOTAL PRECIPITATION
FOR SEPTEMBER WAS 1.72 INCHES. THIS WAS 1.23 INCHES BELOW THE
MONTHLY NORMAL OF 2.95 INCHES.

SAN ANGELO RECORDED 2 DAYS DURING THE MONTH WITH HIGH
TEMPERATURES OF 100 DEGREES OR MORE. FOR ABILENE AND
JUNCTION...THE HIGH TEMPERATURES WERE BELOW 100 DEGREES
FOR ALL OF SEPTEMBER.

SEPTEMBER 2010 WEATHER HIGHLIGHTS...

AN UPPER LEVEL HIGH PRESSURE SYSTEM WAS POSITIONED OVER
TEXAS AND THE SURROUNDING REGION DURING MUCH OF SEPTEMBER.
HOT AND DRY CONDITIONS ACCOMPANIED THIS PATTERN.

WET WEATHER OCCURRED ON A FEW OCCASIONS DURING THE MONTH.
EARLY IN THE MONTH...STRONG TO SEVERE THUNDERSTORMS
OCCURRED AHEAD OF A COLD FRONT...WHICH MOVED SOUTH ACROSS
WEST CENTRAL TEXAS DURING THE OVERNIGHT HOURS OF THE 2ND
AND 3RD. A BAND OF STORMS MOVED SOUTH INTO AN AREA WHERE
A WILDFIRE WAS BURNING...IN SHACKELFORD COUNTY 6 MILES
NORTHWEST OF ALBANY. STRONG WINDS OF 50 TO 60 MPH CAUSED
A TEMPORARY FLAREUP OF THE WILDFIRE...BEFORE HEAVY RAINFALL
EVENTUALLY EXTINGUISHED THE FIRE. THE WILDFIRE AFFECTED
AN AREA OF APPROXIMATELY 1000 ACRES.

STRONG WINDS ACCOMANIED THE BAND OF THUNDERSTORMS AS IT
MOVED SOUTH ACROSS THE BIG COUNTRY. A WIND GUST OF 63 MPH
WAS RECORDED AT DYESS AIR FORCE BASE IN TAYLOR COUNTY.
SOME TREE LIMBS AND POWER LINES WERE BLOWN DOWN ACROSS THE
WESTERN PART OF ABILENE. THE ABILENE REGIONAL AIRPORT
RECORDED A PEAK WIND GUST OF 53 MPH...AND A WIND GUST OF
51 MPH OCCURRED AT THE SAN ANGELO REGIONAL AIRPORT.  PENNY
SIZE HAIL WAS REPORTED IN ROBY (FISHER COUNTY).

LOCALLY HEAVY RAINFALL ACCOMPANIED SOME OF THE STORMS.
PARTS OF THE NORTHERN BIG COUNTRY RECEIVED BETWEEN 1.5 AND
3 INCHES OF RAIN. SCATTERED LOCATIONS ACROSS THE SOUTHERN
HEARTLAND AND NORTHWEST HILL COUNTRY ALSO RECEIVED 1.5 TO
3 INCH AMOUNTS...AND A COUPLE OF LOCATIONS RECEIVED OVER
3 INCHES.

A COOLER AIRMASS FOLLOWED PASSAGE OF THE COLD FRONT.
TEMPERATURES DIPPED INTO THE 50S FOR LOWS ACROSS WEST
CENTRAL TEXAS...ON THE EARLY MORNING OF THE 4TH. A RECORD
LOW TEMPERATURE WAS TIED AT SAN ANGELO ON THE 4TH. 

TROPICAL STORM HERMINE MOVED ONTO THE COAST SOUTH OF
BROWNSVILLE FROM THE WESTERN GULF OF MEXICO...ON THE
EVENING OF THE 6TH. THIS SYSTEM TRACKED NORTH ACROSS
THE SAN ANTONIO BY MIDDAY ON THE 7TH. THE REMNANTS
OF THIS SYSTEM CONTINUED TO TRACK NORTHWARD TRACK ACROSS
THE HEARTLAND LATE ON THE 7TH. THE SYSTEM LIFTED NORTH
OF THE BIG COUNTRY ON THE 8TH. THE HEAVY RAIN WITH THIS
SYSTEM OCCURRED ACROSS ROUGHLY THE EASTERN THIRD OF WEST
CENTRAL TEXAS. MUCH OF THE AREA EAST OF A LINE FROM
ALBANY TO MASON RECEIVED BETWEEN 2.5 AND 5 INCHES. THE
HIGHEST AMOUNTS...BETWEEN 4 AND 5 INCHES...OCCURRED IN
THE FAR WESTERN PART OF SAN SABA COUNTY...AND IN A SMALL
PART OF EASTERN MCCULLOCH COUNTY. THIS RAINFALL OCCURRED
OVER A LONG ENOUGH PERIOD OF TIME TO MINIMIZE FLOODING.

SCATTERED SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY
RAIN OCCURRED ON THE 11TH AND 12TH...AS A WEAK COLD FRONT
SAGGED SOUTH INTO WEST CENTRAL TEXAS BEFORE STALLING.

WITH AN INCREASE IN MOISTURE...A FEW SHOWERS AND
THUNDERSTORMS OCCURRED ACROSS THE SOUTHERN PART OF WEST
CENTRAL TEXAS...FROM THE 17TH TO 20TH. SCATTERED
ADDITIONAL SHOWERS AND THUNDERSTORMS OCCURRED ON THE
22ND TO 24TH.

MORE WIDESPREAD COVERAGE OF SHOWERS AND THUNDERSTORMS
OCCURRED ON THE 25TH...AHEAD OF A STRONGER COLD FRONT COLD
WHICH APPROACHED FROM THE NORTH. THE HEAVIEST RAIN WAS
ACROSS THE NORTHERN HALF OF WEST CENTRAL TEXAS. PARTS OF
HASKELL AND THROCKMORTON COUNTIES RECEIVED 8 TO 10 INCHES
OF RAINFALL. THIS CAUSED FLOODING OF FARM FIELDS...AND
ACROSS A PART OF HIGHWAY 380. SOME LOCATIONS ACROSS THE
BIG COUNTRY AND NORTHERN CONCHO VALLEY RECEIVED 3 TO 6
INCHES OF RAINFALL. ACROSS THE SOUTHERN PART OF WEST
CENTRAL TEXAS THE COVERAGE WAS NOT AS WIDESPREAD. A FEW
LOCATIONS IN TOM GREEN AND EASTERN SCHLEICHER COUNTY
RECEIVED OVER 3 INCHES OF RAIN. OTHER SCATTERED LOCATIONS
ACROSS THE SOUTHERN HALF OF OF WEST CENTRAL TEXAS RECEIVED
BETWEEN 1 AND 3 INCHES OF RAINFALL.

THE COLD FRONT PUSHED SOUTH ACROSS WEST CENTRAL TEXAS ON
THE 26TH...AND WAS FOLLOWED BY A MUCH COOLER AIRMASS.
HIGHS IN THE BIG COUNTRY WERE IN THE 70S ON THE 26TH.
WITH CLEAR SKIES...TEMPERATURES DIPPED INTO THE 40S FOR
EARLY MORNING LOWS ACROSS MUCH OF THE AREA ON THE 27TH.

DRY WEATHER OCCURRED DURING THE LAST FEW DAYS OF THE
MONTH WITH A WARMING TREND IN TEMPERATURES.

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