Severe Thunderstorm Warning 111, NWS Tucson, AZ

594 
WWUS55 KTWC 262132
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
232 PM MST FRI AUG 26 2011

AZC019-262200-
/O.CON.KTWC.SV.W.0111.000000T0000Z-110826T2200Z/
PIMA AZ-
232 PM MST FRI AUG 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM MST
FOR CENTRAL PIMA COUNTY...

AT 226 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES EAST OF COVERED WELLS TO 11 MILES SOUTHWEST OF
COWLIC...OR ALONG A LINE EXTENDING FROM 18 MILES NORTHWEST OF SELLS
TO 21 MILES SOUTHWEST OF SELLS...MOVING WEST AT 10 MPH.

LAT...LON 3249 11191 3158 11174 3176 11236 3250 11245
TIME...MOT...LOC 2132Z 082DEG 9KT 3215 11204 3167 11212

$$

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116 
WWUS55 KTWC 262154
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
254 PM MST FRI AUG 26 2011

AZC019-262201-
/O.EXP.KTWC.SV.W.0111.000000T0000Z-110826T2200Z/
PIMA AZ-
254 PM MST FRI AUG 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIMA COUNTY WILL
EXPIRE AT 300 PM MST...

THE STRONGEST THUNDERSTORMS ACROSS THE TOHONO OODHAM NATION HAVE 
NOW PUSHED SOUTWHEST ACROSS THE INTERNATIONAL BORDER INTO SONORA. 
HOWEVER...A LINE OF STORMS EXTENDS FROM PISINIMO TO JUST EAST OF 
PAPAGO FARMS AND CONTINUES TO MOVE WEST AT 15 MPH. THESE STORMS WILL 
PRODUCE HEAVY RAINFALL AND WIND GUSTS TO 50 MPH. 

LAT...LON 3249 11191 3158 11174 3176 11236 3250 11245
TIME...MOT...LOC 2151Z 082DEG 9KT 3190 11223 3166 11218

$$

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
850 AM MST FRI AUG 26 2011

.SYNOPSIS...EXPECT A CHANCE OF MAINLY AFTERNOON AND EVENING
THUNDERSTORMS ALONG WITH SEASONALLY HOT DAYTIME TEMPERATURES INTO
NEXT WEEK.

&&

.DISCUSSION...THIS MORNINGS 12Z KTWC SOUNDING SHOWED A PRECIPITABLE
WATER VALUE OF 1.39 INCHES...A LIFTED INDEX OF MINUS 5 AND A CAPE OF
AROUND 1950 J/KG. MODIFYING THE SOUNDING USING T=104;TD=52 YIELDS A
LIFTED INDEX OF MINUS 4 AND A CAPE OF AROUND 900 J/KG IF LIFTING THE
PARCEL FROM THE SURFACE AND ABOUT 625 J/KG IF LIFTING THE PARCEL VIA
THE MEAN TEMP METHOD. THAT SAID...EXPECT THE ACTIVITY THIS AFTERNOON
TO BE MOSTLY ISOLATED IN NATURE WITH LOW END SCATTERED OVER THE
MOUNTAINS. ANY STORMS THAT DEVELOP WILL MOVE TO THE NORTHWEST AT
ABOUT 15 MPH.

WILL MAKE SOME ADJUSTMENTS TO THE SHORT TERM TEMPERATURE GRIDS.
OTHERWISE...THE FORECAST FOR THIS AFTERNOON IS ON TRACK.

&&

.AVIATION...ISOLD-SCT TSRA/SHRA DEVELOPING 18Z-20Z TODAY AND
CONTINUING THRU 27/06Z. FEW-BKN CLOUDS AT 10-15K FT AGL BECOMING
SCT-BKN CLOUDS AT 8-12K FT AGL THIS AFTERNOON. SKC-FEW 10-12K FT AFT
27/06Z. SURFACE WIND GENERALLY LESS THAN 10 KTS THRU EARLY SATURDAY
OR 27/12Z. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...EXPECT ISOLATED TO SCATTERED THUNDERSTORMS INTO NEXT
WEEK. NORMAL DIURNAL WIND TRENDS WILL OCCUR...EXCEPT STRONG AND
GUSTY WINDS NEAR THUNDERSTORMS.

&&

.PREV DISCUSSION...HOT TEMPERATURES WILL REMAIN AROUND TODAY AND
INTO THIS WEEKEND WITH A FEW AREAS NEAR DAILY RECORD HIGHS. SOME
DRIER AIR WILL WORKS ITS WAY IN FROM THE EAST WHERE LAST NIGHT THE
PW VALUE AT EL PASO WAS NEAR 0.90". SO EXPECT ISOLATED TO LOW
SCATTERED AREAL COVERAGE OVER THE NEXT THREE DAYS. LITTLE CHANGE TO
COVERAGE EARLY NEXT WEEK.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...NONE.

WEATHER.GOV/TUCSON

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
904 AM MST FRI AUG 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     DUST STORM       RED ROCK                32.58N 111.33W
08/25/2011                   PINAL              AZ   NEWSPAPER

            *** 1 FATAL, 3 INJ *** MULTIIPLE VEHICHLE ACCIDENT ON
            I-10 NEAR RED ROCK DUE TO DUST STORM.

&&

EVENT NUMBER TWC1100093

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