Special Weather Statement, NWS Amarillo, TX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
1056 PM CDT SAT AUG 1 2015

.AVIATION...
FOR THE 06Z TAFS...LITTLE CHANGE TO PREVIOUS AVIATION AFD. THE
CLUSTER OF TSTMS S AND W OF KAMA AS OF THIS WRITING WILL LIKELY
REMAIN S OF THE TERMINAL SITE AND DID NOT INCLUDE IN THIS FCST.
ANOTHER CROP OF SHOWERS AND TSTMS IS PSBL LATER SUNDAY AFTERNOON AND
NIGHT. HOWEVER...HAVE REFRAINED FROM INCLUDING IN THE TAF FCST AT
THIS TIME DUE TO LOW CONFIDENCE IN WHICH TAF SITE...IF ANY...MAY BE
IMPACTED.

ANDRADE

&&

.PREV DISCUSSION... /ISSUED 637 PM CDT SAT AUG 1 2015/

AVIATION...
FOR THE 00Z TAFS...SOME POTENTIAL EXISTS FOR TSTM DEVELOPMENT THIS
EVENING AND TONIGHT ACROSS THE AREA. HOWEVER...EXPECT COVERAGE TO BE
MUCH LESS THAN OBSERVED RECENTLY IF STORMS DEVELOP. FOR THIS REASON
PLUS LOW CONFIDENCE IN WHICH TAF SITE...IF ANY...WILL BE IMPACTED...
HAVE OMITTED THIS WEATHER ELEMENT FROM THIS TAF CYCLE. ANOTHER CROP
OF SHOWERS AND TSTMS PSBL LATE SUNDAY AFTERNOON AND HAVE REFRAINED
FROM INCLUDING IN THE FCST AT THIS TIME SINCE IT IS NEAR THE END OF
THE 24 HOUR PERIOD.

ANDRADE

PREV DISCUSSION... /ISSUED 340 PM CDT SAT AUG 1 2015/

DISCUSSION...
TEXAS AND OKLAHOMA PANHANDLES HAVE REMAINED FAIRLY QUIET THIS
AFTERNOON IN THE WAKE OF DEPARTING MCV.  WE HAVE CANCELLED THE FLASH
FLOOD WATCH WHICH WAS SET TO EXPIRE AT 7 PM TODAY...SINCE THE THREAT
FOR FLOODING ISSUES IN THE NEAR TERM HAS DIMINISHED.

THUNDERSTORMS ARE DEVELOPING AT THIS TIME OVER PARTS OF EASTERN NEW
MEXICO...WITH MOVEMENT INTO OUR WESTERN SECTIONS EXPECTED THIS
EVENING.  LOW-LEVEL SOUTHERLY FLOW EXPECTED TO INCREASE AGAIN
TONIGHT...BUT FLOW IS EXPECTED TO BE MORE VEERED THAN THAT OF LAST
NIGHT...RESULTING IN LESS OVERALL SHEAR AND LESS ORGANIZATION TO
CONVECTION.  STILL...POSSIBILITY EXISTS FOR THUNDERSTORMS TO CONTINUE
PAST MIDNIGHT...PARTICULARLY IN EASTERN SECTIONS...WITH POPS ADJUSTED
ACCORDINGLY.

SUNDAY MORNING EXPECTED TO BE FAIRLY QUIET...WITH ANOTHER ROUND OF
AFTERNOON AND EVENING THUNDERSTORMS LIKELY TO OCCUR.

ALL SHORT- AND MEDIUM-RANGE MODELS ARE SUGGESTING DEVELOPMENT OF A
SHORTWAVE TROF AT 700 MB DURING THE MONDAY AND MONDAY NIGHT TIME
FRAME.  HAVE INCREASED POPS MOST SECTIONS DURING THESE PERIODS AS
CURVATURE IN FLOW AND FRONTOGENESIS WOULD ADD SUPPORT FOR
THUNDERSTORM DEVELOPMENT.  SHOULD THIS INDEED OCCUR...MORE FLOODING
ISSUES WILL LIKELY ARISE.

LOW POPS RETAINED IN EAST ON TUESDAY...WITH DRY FORECAST THEREAFTER.

COCKRELL

&&

.AMA WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
OK...NONE.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
320 PM CDT SAT AUG 1 2015

OKZ001>003-TXZ001>020-021115-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
320 PM CDT SAT AUG 1 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...THROUGH TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE OKLAHOMA
AND TEXAS PANHANDLES. MANY OF THESE STORMS WILL BE CAPABLE OF
PRODUCING HEAVY RAINFALL...WHICH MAY RESULT IN LOCALIZED FLOODING OR
FLASH FLOODING. ALSO...SOME OF THE STRONGER STORMS COULD PRODUCE
BRIEF GUSTY WINDS TO AROUND 50 MPH.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS WILL BE POSSIBLE ACROSS MOST OF THE OKLAHOMA AND TEXAS PANHANDLES
THROUGH TUESDAY. MANY OF THESE STORMS WILL BE CAPABLE OF PRODUCING HEAVY
RAINFALL...WHICH MAY LEAD TO FLOODING OR FLASH FLOODING. SOME OF THE
STRONGER STORMS COULD PRODUCE GUSTY WINDS TO AROUND 50 MPH.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. OBSERVERS ARE
REQUESTED TO RELAY ANY RAINFALL AND FLOODING REPORTS TO THE NATIONAL
WEATHER SERVICE IN AMARILLO.

COCKRELL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1123 PM CDT SAT AUG 1 2015

TXZ013-018-020515-
ARMSTRONG TX-CARSON TX-
1123 PM CDT SAT AUG 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ARMSTRONG AND EXTREME
SOUTHEASTERN CARSON COUNTIES UNTIL 1215 AM CDT...

AT 1123 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 7 MILES SOUTHWEST OF CLAUDE...MOVING EAST AT 15
MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

* LOCATIONS IMPACTED INCLUDE...
  CLAUDE...             GOODNIGHT...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN.

LAT...LON 3519 10121 3493 10115 3496 10153 3508 10152
TIME...MOT...LOC 0423Z 262DEG 15KT 3503 10143

14

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1228 AM CDT SUN AUG 2 2015

OKZ002-TXZ003-004-020615-
HANSFORD TX-OCHILTREE TX-TEXAS OK-
1228 AM CDT SUN AUG 2 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OCHILTREE...NORTHERN
HANSFORD AND SOUTHERN TEXAS COUNTIES UNTIL 115 AM CDT...

AT 1228 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 13 MILES SOUTHWEST OF HARDESTY...OR 16 MILES
SOUTHEAST OF GUYMON...MOVING SOUTHEAST AT 15 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

* LOCATIONS IMPACTED INCLUDE...
  GRUVER...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN.

LAT...LON 3635 10094 3620 10151 3655 10150 3661 10125
TIME...MOT...LOC 0528Z 333DEG 14KT 3647 10134

14

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1253 AM CDT SUN AUG 2 2015

TXZ009-010-014-015-020645-
GRAY TX-HEMPHILL TX-ROBERTS TX-WHEELER TX-
1253 AM CDT SUN AUG 2 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WHEELER...
SOUTHEASTERN ROBERTS...EXTREME SOUTHWESTERN HEMPHILL AND NORTHERN
GRAY COUNTIES UNTIL 145 AM CDT...

AT 1253 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 7 MILES WEST OF LEFORS...OR 9 MILES SOUTH OF
PAMPA...MOVING EAST AT 30 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

* LOCATIONS IMPACTED INCLUDE...
  MIAMI...              KELLERVILLE...        LEFORS...
  CODMAN...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN.

LAT...LON 3575 10061 3533 10031 3531 10100 3544 10104
TIME...MOT...LOC 0553Z 251DEG 27KT 3542 10090

14

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
114 AM CDT SUN AUG 2 2015

OKZ002-TXZ003-004-020715-
HANSFORD TX-OCHILTREE TX-TEXAS OK-
114 AM CDT SUN AUG 2 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN OCHILTREE...NORTHERN
HANSFORD AND SOUTHERN TEXAS COUNTIES UNTIL 215 AM CDT...

AT 114 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM NEAR GUYMON...MOVING SOUTHEAST AT 20 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

* LOCATIONS IMPACTED INCLUDE...
  GUYMON...             GOODWELL...           GRUVER...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN.

LAT...LON 3679 10140 3637 10097 3618 10162 3650 10162
      3650 10164 3673 10165
TIME...MOT...LOC 0614Z 323DEG 18KT 3667 10149

14

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