WFO San Angelo Climatology

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1033 PM CDT FRI JUL 3 2009

...7TH WARMEST JUNE ON RECORD TIED AT SAN ANGELO...

TOTAL PRECIPITATION FOR THE MONTH VARIED FROM WELL ABOVE TO
WELL BELOW NORMAL. SCATTERED POCKETS IN TOM GREEN...SCHLEICHER
AND KIMBLE COUNTIES RECEIVED LESS THAN 25 PERCENT OF NORMAL
RAINFALL FOR THE MONTH. A FEW LOCATIONS IN FISHER...CROCKETT...
EASTERN STERLING AND FAR NORTHEASTERN RUNNELS COUNTIES RECEIVED
MORE THAN 200 PERCENT OF NORMAL RAINFALL FOR JUNE. OVERALL...
FOR MORE THAN HALF OF WEST CENTRAL TEXAS...THE RAINFALL AMOUNTS
FOR THE MONTH WERE BELOW NORMAL.

TEMPERATURES AVERAGED ABOVE NORMAL FOR THE MONTH...ESPECIALLY
AT SAN ANGELO.

AT ABILENE REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR
JUNE WAS 82.7 DEGREES. THIS WAS 2.9 DEGREES ABOVE THE NORMAL
AVERAGE TEMPERATURE OF 79.8 DEGREES. TOTAL PRECIPITATION FOR
JUNE WAS 2.68 INCHES. THIS WAS 0.38 INCHES BELOW THE MONTHLY
NORMAL OF 3.06 INCHES.

AT SAN ANGELO REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR
JUNE WAS 84.7 DEGREES. THIS WAS 5.5 DEGREES ABOVE THE NORMAL
AVERAGE TEMPERATURE OF 79.2 DEGREES. THIS TIES THE 7TH WARMEST
JUNE ON RECORD FOR SAN ANGELO. TOTAL PRECIPITATION FOR JUNE WAS
1.74 INCHES. THIS WAS 0.78 INCHES BELOW THE MONTHLY NORMAL OF
2.52 INCHES.

THE NUMBER OF DAYS IN JUNE WITH HIGH TEMPERATURES OF 100 DEGREES
OR INCLUDE 6 AT ABILENE...14 AT SAN ANGELO...AND 10 AT JUNCTION.


WEATHER HIGHLIGHTS FOR JUNE 2009...

THE WEATHER PATTERN WAS ACTIVE ACROSS WEST CENTRAL TEXAS IN
JUNE.

AN AREA OF SHOWERS AND THUNDERSTORMS OVERSPREAD THE WESTERN BIG
COUNTRY...CONCHO VALLEY AND NORTHERN EDWARDS PLATEAU BETWEEN
MIDNIGHT AND MID-MORNING ON THE 1ST. SCATTERED LOCATIONS...MOSTLY
ACROSS THE CONCHO VALLEY...RECEIVED 1 TO 2 INCHES OF RAINFALL.

A SEVERE WEATHER EVENT OCCURRED ON THE 2ND...AND THE TOWN OF ROBY
WAS THE MOST ADVERSELY AFFECTED.  WITH THE APPROACH OF A COLD
FRONT INTO A VERY UNSTABLE AIRMASS...SCATTERED THUNDERSTORMS
DEVELOPED OVER THE BIG COUNTRY AND BECAME SEVERE DURING THE LATE
AFTERNOON AND EARLY EVENING HOURS.

A SEVERE STORM OVER FISHER COUNTY PRODUCED HAIL OF BASEBALL TO
SOFTBALL SIZE IN THE TOWN OF ROBY...ALONG WITH DAMAGING WINDS.
THE COMBINATION OF THIS VERY LARGE HAIL AND STRONG WINDS CAUSED
DAMAGE TO MANY BUILDINGS IN ROBY. QUARTER SIZE HAIL WAS REPORTED
IN CALLAHAN COUNTY...AND WIND DAMAGE TO POWER LINES WAS REPORTED
JUST WEST OF MERKEL.

A COMPLEX OF STRONG STORMS MOVED SOUTHEAST ACROSS THE CONCHO
VALLEY...HEARTLAND...AND INTO THE NORTHWEST HILL COUNTRY DURING
THE EARLY NIGHTTIME HOURS. THE VERY HEAVY RAINFALL FROM THESE
STORMS CAUSED FLASH FLOODING OF STREETS IN BROWNWOOD. PEAK WIND
GUSTS REACHED 45 MPH AT SAN ANGELO AND 43 MPH AT ABILENE.
SCATTERED LOCATIONS ACROSS THE CONCHO VALLEY AND HEARTLAND
RECEIVED 2 TO 3 INCHES OF RAINFALL. NUMEROUS OTHER LOCATIONS IN
THE PATH OF THIS COMPLEX OF STORMS RECEIVED 1 TO 2 INCHES OF RAIN.

ON THE 6TH...A HEATBURST EVENT OCCURRED FROM THE SWEETWATER TO THE
ABILENE AREAS. ON THE LATE EVENING AND EARLY NIGHTTIME HOURS OF THE
6TH...SCATTERED THUNDERSTORMS DEVELOPED ALONG A DRYLINE AND MOVE
EAST ACROSS THE NORTHERN CONCHO VALLEY AND SOUTHERN BIG COUNTRY.
AS THESE STORMS DISSIPATED...THEY PRODUCED A RELATIVELY RARE
PHENOMENON KNOWN AS A HEATBURST.  A HEATBURST IS ACCOMPANIED BY A
RAPID RISE IN TEMPERATURES AND A RAPID DROP IN RELATIVE HUMIDITY. A
HEATBURST PRODUCES STRONG AND SOMETIMES DAMAGING WINDS. WITH THIS
HEATBURST...WIND GUSTS REACHED 61 MPH AT SWEETWATER AND 63 MPH AT
ABILENE. SOME WIND DAMAGE TO TREES AND POWER LINES WAS REPORTED
IN THE ABILENE AREA.

ON THE EVENING OF THE 7TH...A SEVERE STORM TRACKED INTO FISHER
COUNTY AND PRODUCED GOLFBALL SIZE HAIL AT ROBY.

SEVERE STORMS WITH LARGE HAIL AND DAMAGING WINDS OCCURRED ACROSS
THE BIG COUNTRY ON THE EVENING AND EARLY NIGHTTIME HOURS OF THE
8TH. THIS WAS FACILITATED BY THE APPROACH OF A COLD FRONT FROM
THE NORTH...AND THE APPROACH OF A DRYLINE FROM THE WEST...INTO
AN UNSTABLE AIRMASS. THE LARGEST HAIL REPORTED WAS GOLFBALL
SIZE 5 MILES WEST OF HAMLIN (FISHER COUNTY)...AND 10 MILES WEST
OF ANSON (JONES COUNTY). A WIND GUST OF 79 MPH WAS MEASURED AT
DYESS AIR FORCE BASE...AND WINDS OF 60 MPH WERE REPORTED AT TYE
(TAYLOR COUNTY). IN ABILENE...A ROOF WAS BLOWN OFF OF A BUILDING.
WIND DAMAGE WAS ALSO REPORTED IN MERKEL...AND JUST SOUTHEAST OF
TRENT. FLASH FLOODING OF ROADS WAS REPORTED IN TUXEDO (JONES
COUNTY). SOME OF THE STORMS PRODUCED 1 TO 2 INCHES OF RAINFALL.

SCATTERED SHOWERS AND THUNDERSTORMS OCCURRED ACROSS THE
NORTHWESTERN CONCHO VALLEY AND SOUTHWESTERN BIG COUNTRY ON THE
EVENING AND EARLY NIGHTTIME HOURS OF THE 9TH...BUT THE STORMS
WERE NOT SEVERE.

A SEVERE WEATHER AND HEAVY RAIN EVENT OCCURRED ACROSS THE BIG
COUNTRY ON THE 10TH. WITH THE APPROACH OF A WEAK COLD FRONT FROM
THE NORTHWEST AND A DRYLINE FROM THE WEST...ALONG WITH AN UPPER
LEVEL DISTURBANCE...NUMEROUS STRONG TO SEVERE THUNDERSTORMS
OCCURRED ACROSS THE BIG COUNTRY. THE LARGEST HAIL WAS GOLFBALL
SIZE...REPORTED AT ROTAN AND 12 MILES SOUTH OF BAIRD. WINDS TO
70 MPH WERE REPORTED 5 MILES WEST OF HASKELL...AND A 58 MPH
WIND GUST OCCURRED 12 MILES SOUTH OF BAIRD. WIND GUSTS TO 60 MPH
DOWNED TREE LIMBS IN THROCKMORTON. AN ISOLATED SEVERE STORM
TRACKED ACROSS PARTS OF CROCKETT COUNTY AND PRODUCED GOLFBALL
SIZE HAIL 15 MILES SOUTH OF OZONA.

IN ADDITION TO THE SEVERE WEATHER...HEAVY RAINFALL FROM THE
STORMS CAUSED FLASH FLOODING OF SOME ROADS IN HASKELL COUNTY.
WATER WAS REPORTED OVER A HIGHWAY IN JONES COUNTY...5 MILES
SOUTH OF AVOCA. RAINFALL AMOUNTS OF 1 TO 2 INCHES OCCURRED
WITH SOME OF THESE STORMS...AND THE FLOODING COULD HAVE BEEN
PARTLY THE THE RESULT OF NEARLY SATURATED GROUND FROM RECENT
DAYS OF STORMS WITH HEAVY RAIN.

IN ALL...A TOTAL OF 17 COMBINED SEVERE WEATHER AND FLASH
FLOODING REPORTS WERE RECEIVED FOR THIS EVENT.

WITH A WEAK NEARBY WEATHER BOUNDARY AND A VERY UNSTABLE
AIRMASS...AN ISOLATED SEVERE STORM PRODUCED GOFLBALL SIZE HAIL
AT CHEROKEE (SAN SABA COUNTY) DURING THE EARLY NIGHTTIME
HOURS OF THE 11TH. A FEW STORMS OCCURRED IN EXTREME EASTERN
BROWN AND FAR EASTERN SAN SABA COUNTIES. RAINFALL AMOUNTS OF 1
TO 2 INCHES OCCURRED ALONG THE EASTERN BORDER OF BROWN COUNTY...
AND NEAR THE COLORADO RIVER IN SAN SABA COUNTY.

A SEVERE WEATHER EVENT OCCURRED ACROSS PARTS OF THE HEARTLAND
AND NORTHWEST HILL COUNTRY ON THE 12TH...WITH A VERY UNSTABLE
AIRMASS AND A WEAK WEATHER BOUNDARY NEARBY. A CLUSTER OF STORMS
DEVELOPED OVER BROWN COUNTY DURING THE LATE AFTERNOON AND EARLY
EVENING...AND THEN CONTINUALLY REDEVELOPED SOUTH-SOUTHWESTWARD
INTO MASON COUNTY TOWARD MIDNIGHT. THE STORMS PRODUCED HAIL TO
QUARTER SIZE IN BROWN AND SAN SABA COUNTIES. IN MCCULLOCH
COUNTY...A ROOF WAS BLOWN OFF OF A HOUSE BY STRONG WINDS IN
SOUTHWESTERN BRADY. HEAVY RAINFALL CAUSED FLASH FLOODING AT
SEVERAL LOCATIONS IN BRADY. IN MASON COUNTY...A LARGE SUPERCELL
STORM PRODUCED TENNIS BALL SIZE HAIL 13 MILES NORTH OF MASON...
AND AT KATEMCY. GOLFBALL SIZE HAIL OCCURRED 10 MILES EAST OF
MASON. WITH STRONG WINDS...A FEW ROOFS WERE BLOWN OFF AND TREE
LIMBS WERE BROKEN IN KATEMCY. IN ALL...A TOTAL OF 20 SEVERE
WEATHER REPORTS WERE RECEIVED FOR THIS EVENT...ALONG WITH ONE
FLASH FLOODING REPORT. VERY HEAVY RAINFALL ACCOMPANIED THE
STORMS...AND SOME LOCATIONS ACROSS MCCULLOCH...SAN SABA AND
MASON COUNTIES RECEIVED BETWEEN 1.5 AND 3 INCHES OF RAIN.

A SEVERE WEATHER EVENT AFFECTED AREAS OF THE BIG COUNTRY
ON THE AFTERNOON AND EARLY NIGHTTIME HOURS OF THE 13TH. WITH
A VERY UNSTABLE AIRMASS...A DRYLINE TO THE WEST...AND A WEAK
COLD FRONTAL BOUNDARY TO THE NORTH...SEVERE STORMS OCCURRED
MOSTLY ACROSS THE NORTHERN BIG COUNTRY. A SUPERCELL STORM
PRODUCED A TORNADO IN HASKELL COUNTY...IN THE VICINITY OF
RULE. THE TORNADO WAS ONE QUARTER OF A MILE WIDE AND HAD
A PATH LENGTH OF ABOUT 6 MILES. THIS STRONG TORNAD WAS RATED
EF-2 ON THE ENHANCED FUJITA SCALE...WITH ESTIMATED WINDS
AROUND 120 MPH. THIS TORNADO CAUSED DAMAGE TO SEVERAL HOMES
AND OUTBUILDINGS...IRRIGATION SPRINKLERS AND MANY POWER
POLES. LARGE HAIL...RANGING FROM NICKEL TO HALF DOLLAR SIZE...
WAS ALSO REPORTED IN RULE. A TORNADO WAS ALSO REPORTED 3 MILES
EAST OF STAMFORD (JONES COUNTY). HAIL TO HALF DOLLAR SIZE WAS
REPORTED ON THE EAST SIDE OF ROSCOE (NOLAN COUNTY). A WIND
GUST OF 68 MPH WAS MEASURED BY WIND EQUIPMENT OF A MESONET
STATION 1 MILE NORTHWEST OF HASKELL...BEFORE COMMUNICATION WAS
LOST WITH THE MESONET STATION. A TELEPHONE POLE WAS BLOWN DOWN
AT THIS LOCATION. A WIND GUST OF 59 MPH WAS MEASURED 7 MILES
NORTHWEST OF STAMFORD (HASKELL COUNTY)...AND A WIND GUST TO
60 MPH WAS REPORTED AT WOODSON (THROCKMORTON COUNTY). RAINFALL
AMOUNTS OF 1 TO 2 INCHES OCCURRED WITH THE STRONGER STORMS.
DURING MOST OF THE MIDDLE OF THE MONTH...A HIGH PRESSURE SYSTEM
ALOFT EXPANDED FROM TEXAS ACROSS MUCH OF THE SOUTHERN STATES...
AND DOMINATED THE WEATHER PATTERN. THIS BROUGHT HOT AND DRY
WEATHER TO WEST CENTRAL TEXAS. HIGH TEMPERATURES REACHED OR
EXCEEDED 100 DEGREES FOR A NUMBER OF DAYS. THE HOTTEST
TEMPERATURES WERE EXPERIENCED ON THE 11TH THROUGH 13TH. AT
SAN ANGELO...A RECORD HIGH OF 108 DEGREES WAS SET ON THE 13TH.
AT ABILENE...A RECORD HIGH OF 102 DEGREES WAS TIED ON THE 13TH.

THE HIGH PRESSURE SYSTEM TEMPORARILY MOVED EAST ON THE 19TH
AND 20TH...AND ALLOWED A FEW UPPER LEVEL DISTURBANCES TO
MOVE NORTH OUT OF MEXICO AND INTO WEST TEXAS. WITH AN INCREASE
IN MOISTURE...SHOWERS AND THUNDERSTORMS AFFECTED AREAS OF WEST
CENTRAL TEXAS...MOSTLY WEST OF A LINE FROM SONORA TO SAN ANGELO
TO ABILENE. THE HEAVIEST RAINFALL AFFECTED CROCKETT COUNTY...
WHERE AMOUNTS OF 2 TO 3 INCHES WERE COMMON. SOME CROCKETT
COUNTY LOCATIONS RECEIVED BETWEEN 2 AND 5 INCHES...AND A SMALL
PART OF EXTREME SOUTHERN CROCKETT COUNTY RECEIVED OVER 5
INCHES. MUCH OF THE AREA SOUTHWEST OF A LINE FROM SWEETWATER
TO SAN ANGELO TO SONORA RECEIVED AMOUNTS BETWEEN ONE HALF AND
1.5 INCHES.

LATE IN THE MONTH THE UPPER LEVEL HIGH PRESSURE SYSTEM BUILT
BACK OVER TEXAS...AND BROUGHT A RETURN TO A HOT AND DRY
PATTERN. HIGH TEMPERATURES WERE IN THE 100 TO 105 DEGREE
RANGE ON SEVERAL DAYS.

DURING THE LAST FEW DAYS OF THE MONTH...THE UPPER LEVEL HIGH
PRESSURE SYSTEM WEAKENED AND SHIFTED WESTWARD TOWARD THE
FOUR CORNERS REGION. THIS ALLOWED A WEAK COLD FRONT TO MOVE
DOWN INTO WEST CENTRAL TEXAS ON THE 28TH BEFORE STALLING
AND WASHING OUT. A FEW WEAK DISTURBANCES ALSO MOVED DOWN
INTO WEST CENTRAL TEXAS...IN THE WEAK NORTHERLY FLOW ALOFT
WHICH DEVELOPED. THESE FEATURES BROUGHT SHOWERS AND
THUNDERSTORMS TO VARIOUS PART OF WEST CENTRAL TEXAS. A FEW
LOCATIONS RECEIVED OVER 2 INCHES OF RAINFALL. A NUMBER OF
OTHER LOCATIONS RECEIVED 1 TO 2 INCHES OF RAIN.

$$