SWOMCD
SPC MCD 152252
KSZ000-OKZ000-TXZ000-152345-
MESOSCALE DISCUSSION 0839
NWS STORM PREDICTION CENTER NORMAN OK
0552 PM CDT FRI MAY 15 2009
AREAS AFFECTED...ERN TX PANHANDLE...WRN/NRN OK...SERN KS
CONCERNING...TORNADO WATCH 307...
VALID 152252Z - 152345Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 307 CONTINUES.
AS OF 2245Z...AN EVOLVING QLCS WITH EMBEDDED SUPERCELL STRUCTURES
STRETCHED FROM NEAR TOP TO GAG WITH GENERAL STORM MOTION AROUND 20
KTS TO THE ESE. FARTHER SW...AN INTENSE DISCRETE SWD-MOVING
SUPERCELL WAS LOCATED OVER GRAY COUNTY TX. A VERY STRONG AND BROAD
MESOCYCLONIC SIGNATURE HAS PERSISTED FOR NEARLY AN HOUR WITH REPORTS
OF BRIEF TORNADOES AND DAMAGING STRAIGHT-LINE WINDS. AMBIENT
ENVIRONMENT SHOULD SUPPORT A HIGH LIKELIHOOD OF CONTINUED SEVERE
THREAT WITH THIS CELL AS IT APPROACHES THE
WHEELER/DONLEY/COLLINGSWORTH COUNTY AREAS. BY AROUND 2330Z...STORM
EVOLUTION WILL LIKELY BE DISRUPTED BY ONGOING CONVECTION ACROSS
BRISCOE/HALL COUNTIES. IN ADDITION...SURFACE DEW POINTS HAVE FALLEN
INTO THE MIDDLE/UPPER 50S ACROSS THE SERN PANHANDLE AND LOW ROLLING
PLAINS OF TX. THIS SUGGESTS OVERALL TORNADO THREAT SHOULD TREND
DOWNWARD WITH TIME.
ELSEWHERE...WITH CONVECTIVE MODE PRIMARILY LINEAR AND STRONGER FLOW
IN THE KINEMATIC PROFILE GENERALLY RESIDING IN THE LOW-LEVELS /PER
AREA PROFILERS/ AMIDST A VERY UNSTABLE AIR MASS...SEVERE HAIL/WIND
SHOULD BE THE PRIMARY THREATS WITH BRIEF TORNADOES POSSIBLE.
..GRAMS.. 05/15/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...EAX...TSA...TOP...ICT...OUN...DDC...LUB...AMA...
LAT...LON 38749473 37439607 35229919 34429983 34160068 34380107
35280118 36359991 38019726 38849582 38749473
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