WFO San Angelo Climatology

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1100 PM CDT SUN JUN 1 2008

...TEMPERATURES AVERAGED ABOVE NORMAL IN MAY...

TOTAL PRECIPITATION FOR MAY VARIED CONSIDERABLY ACROSS WEST
CENTRAL TEXAS...FROM WELL ABOVE TO WELL BELOW NORMAL. THE GREATEST
AMOUNTS (2 TO 4 INCHES WITH LOCALLY HIGHER VALUES) OCCURRED IN A
SWATH FROM THE NORTHERN AND EASTERN CONCHO VALLEY SOUTHEASTWARD
ACROSS THE SOUTHERN HEARTLAND AND PARTS OF THE NORTHWEST HILL
COUNTRY. THESE AMOUNTS ALSO OCCURRED ACROSS AREAS OF THE BIG
COUNTRY. THE LEAST AMOUNT OF PRECIPITATION OCCURRED AT SOME
POCKETS ACROSS THE REGION SOUTHWEST OF A STERLING CITY TO SAN
ANGELO TO SONORA LINE...WHERE LESS THAN ONE HALF INCH OF RAINFALL
WAS RECEIVED.

AT ABILENE REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR MAY WAS
74.1 DEGREES. THIS WAS 1.3 DEGREES ABOVE THE NORMAL AVERAGE
TEMPERATURE OF 72.8 DEGREES. TOTAL PRECIPITATION FOR MAY WAS 2.40
INCHES. THIS WAS 0.43 INCHES BELOW THE MONTHLY NORMAL OF 2.83
INCHES. AT ABILENE...NO DAYS WERE RECORDED WITH A HIGH TEMPERATURE
OF 100 DEGREES OR GREATER.

AT SAN ANGELO REGIONAL AIRPORT...THE AVERAGE TEMPERATURE FOR MAY
WAS 76.1 DEGREES. THIS WAS 3.0 DEGREES ABOVE THE NORMAL AVERAGE
TEMPERATURE OF 73.1 DEGREES. TOTAL PRECIPITATION FOR MAY WAS 1.01
INCHES. THIS WAS 2.08 INCHES BELOW THE MONTHLY NORMAL OF 3.09
INCHES. SAN ANGELO RECORDED 6 DAYS WITH A HIGH TEMPERATURE OF 100
DEGREES OR GREATER.

JUNCTION RECORDED 3 DAYS WITH HIGH TEMPERATURES OF 100 DEGREES OR
GREATER.


MAY 2008 WEATHER HIGHLIGHTS...

A WEAKENING AREA OF SHOWERS AND THUNDERSTORMS MOVED SOUTHEAST
INTO THE BIG COUNTRY DURING THE POST-MIDNIGHT HOURS OF THE 6TH.
ALTHOUGH RAINFALL OF 1 TO 2 INCHES OCCURRED AT A FEW
LOCATIONS...THE AMOUNTS WERE MOSTLY BETWEEN ONE QUARTER AND ONE
HALF INCH.

WITH THE APPROACH OF A STORM SYSTEM FROM THE SOUTHERN ROCKIES...
SOME SHOWERS AND THUNDERSTORM OCCURRED ACROSS MUCH OF WEST
CENTRAL TEXAS ON THE EARLY MORNING OF OF THE 7TH. THE RAINFALL
AMOUNTS GENERALLY VARIED UNDER ONE HALF INCH...ALTHOUGH SCATTERED
LOCATIONS ACROSS THE FAR NORTHERN AND WESTERN BIG COUNTRY RECEIVED
ONE QUARTER TO ONE HALF INCH OF RAIN.

AS THIS STORM SYSTEM LIFED INTO THE SOUTHERN PLAINS...A DRYLINE
ADVANCED EAST ACROSS WEST CENTRAL TEXAS ON THE 7TH. STRONG GUSTY
WEST WINDS OCCURRED AFTER THE DRYLINE PASSAGE. A PEAK WIND GUST
OF 48 MPH WAS RECORDED AT SAN ANGELO...AND A PEAK GUST OF 43 MPH
OCCURRED AT JUNCTION. VERY DRY AIR ALSO INVADED THE REGION...
AND RELATIVE HUMIDITY VALUES PLUNGED INTO THE 5 TO 15 PERCENT
RANGE ACROSS THE REGION.

HOT AND DRY CONDITIONS OCCURRED ON THE 9TH AND 10TH. WITH THIS
SETUP...HIGH TEMPERATURES REACHED THE 100-DEGREE MARK AT A
NUMBER OF LOCATIONS FOR THE FIRST TIME THIS YEAR. AT SAN ANGELO...
THE HIGH TEMPERATURE OF 100 DEGREES ON THE 10TH. THIS MARKED THE
FIRST TIME THE TEMPERATURE HAS REACHED THE CENTURY MARK SINCE
AUGUST 26TH OF THE YEAR 2006. VERY DRY AIR INVADED THE REGION
ON THE 10TH. AFTERNOON RELATIVE HUMIDITY VALUES DROPPED INTO THE
5 TO 15 PERCENT RANGE ACROSS THE REGION. GUSTY NORTH TO NORTHEAST
WINDS FOLLOWED THE PASSAGE OF A COLD FRONT DURING THE OVERNIGHT
HOURS OF THE 10TH AND 11TH. A PEAK WIND GUST OF 44 MPH WAS
RECORDED AT SAN ANGELO.

SEVERE WEATHER EVENTS OCCURRED ON THE 13TH AND 14TH...IN
ASSOCIATION WITH AN UPPER LEVEL STORM SYSTEM WHICH APPROACHED
FROM NEW MEXICO. A FRONTAL SYSTEM WAS POSITIONED ACROSS WEST
CENTRAL TEXAS DURING THIS TIME...AND A DRYLINE ADVANCED EAST
INTO THE AREA ON THE 13TH. THIS SETUP WITH AN UNSTABLE AIRMASS
SET THE STAGE FOR STRONG TO SEVERE THUNDERSTORMS ON THE 13TH
AND 14TH. ON BOTH DAYS...THE STORMS WERE MOST NUMEROUS ACROSS
ROUGHLY THE SOUTHEASTERN THIRD OF WEST CENTRAL TEXAS.

ON THE 13TH...THE SEVERE WEATHER OCCURRED DURING THE EVENING
AND EARLY NIGHTTIME HOURS. QUARTER TO GOLFBALL SIZE HAIL
OCCURRED ACROSS AREAS OF MCCULLOCH COUNTY. WINDS TO 60 MPH
WERE REPORTED AT BRADY...AND STRONG WINDS DOWNED TREE LIMBS
AND POWER LINES AT JUNCTION. RAINFALL AMOUNTS OF 1 TO 3 INCHES
OCCURRED ACROSS MUCH OF THE AREA SOUTHEAST OF A LINE FROM
BROWNWOOD TO SAN ANGELO TO SONORA.

ON THE 14TH...A SUPERCELL SEVERE STORM TRACKED EAST ACROSS
THE BIG COUNTRY. A TORNADO WAS REPORTED FROM THIS STORM
APPROXIMATELY 4 MILES SOUTH OF LAKE SWEETWATER (NOLAN COUNTY).
VERY LARGE HAIL TO BASEBALL SIZE WAS REPORTED FROM THIS
STORM IN CALLAHAN COUNTY. IN TAYLOR COUNTY...TEACUP SIZE
HAIL (LARGER THAN BASEBALL SIZE) WAS REPORTED IN POTOSI.
STRONG WINDS FROM THIS STORM CAUSED SOME WIND DAMAGE NEAR
BUFFALO GAP...AND 70 MPH WINDS WERE REPORTED 6 MILES
NORTHWEST OF CROSS PLAINS.

FARTHER TO THE SOUTH ON THE 14TH...A SUPERCELL SEVERE STORM
TRACKED EASTWARD FROM SAN ANGELO ACROSS CONCHO...MCCULLOCH
AND SAN SABA COUNTIES. THIS STORM PRODUCED NICKEL TO QUARTER
SIZED HAIL IN TOM GREEN COUNTY. IN CONCHO COUNTY...LARGE
HAIL TO GOLFBALL SIZE WAS REPORTED (NORTHWEST OF EDEN). IN
EDEN...HEN EGG SIZE HAIL WAS REPORTED...AND THIS RESULTED IN
ROOF DAMAGE...BROKEN CAR WINDSHIELDS AND BROKEN HOUSE WINDOWS.
IN MCCULLOCH COUNTY...A TORNADO TRACKED ACROSS THE BRADY LAKE
AREA. THIS TORNADO WAS RATED EF0 ON THE ENHANCED FUJITA SCALE
WITH WIND SPEEDS IN THE RANGE OF 65 TO 85 MPH. THIS CAUSED
DAMAGE TO VEGETATION ON BOTH SIDES OF THE LAKE. A TORNADO WAS
ALSO REPORTED ABOUT ONE QUARTER OF A MILE EAST OF MELVIN. THE
AUTOMATED WEATHER OBSERVING EQUIPMENT AT BRADY MUNICIPAL
AIRPORT MEASURED A WIND GUST OF 69 MPH BEFORE THE EQUIPMENT
LOST POWER. WIND DAMAGE WAS ALSO REPORTED IN BRADY.

ON THE 14TH...RAINFALL AMOUNTS BETWEEN ONE HALF INCH AND 1.5
INCHES WERE COMMON WITH THE SUPERCELL STORM WHICH TRACKED
EAST ACROSS THE BIG COUNTRY. AMOUNTS OF 1 TO 2 INCHES
OCCURRED ACROSS SOUTHEASTERN SECTIONS OF WEST CENTRAL TEXAS.

A COOLER AIRMASS RESIDED OVER THE REGION IN THE FOLLOWING
DAYS...THROUGH THE 17TH. AN UPPER LEVEL HIGH PRESSURE
SYSTEM DEVELOPED OVER THE REGION AND PERSISTED THROUGH MUCH
OF THE REMAINDER OF THE MONTH. LITTLE OR NO PRECIPITATION
AND WELL-ABOVE NORMAL TEMPERATURES OCCURRED DURING THAT TIME.
HIGHS REACHED WELL INTO THE 90S...THOUGH SEVERAL LOCATIONS
RECORDED HIGHS OF 100 TO 105 DEGREES.

THIS PATTERN WAS TEMPORARILY INTERRUPTED ON THE 27TH AND
28TH. WITH THE APPROACH OF A WEAK COLD FRONT...A CLUSTER OF
STRONG THUNDERSTORMS MOVED SOUTHEAST ACROSS THE NORTHERN HALF
OF WEST CENTRAL TEXAS...DURING THE OVERNIGHT HOURS OF THE
27TH AND 28TH. GUSTY WINDS AND SMALL HAIL ACCOMANIED THE
STRONGER STORMS. RAINFALL AMOUNTS OF 1 TO 2 INCHES WERE
COMMON ACROSS THE BIG COUNTRY AND NORTHERN CONCHO VALLEY...
WITH LOCALIZED AMOUNTS OF 2 TO 3 INCHES.

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