[SWODY1] SWODY1

SWODY1 at goshenarc.org SWODY1 at goshenarc.org
Thu Jul 29 20:04:57 UTC 2004


ACUS01 KWNS 291955
SWODY1
SPC AC 291953

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0253 PM CDT THU JUL 29 2004

VALID 292000Z - 301200Z

THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 NNE
TAD 25 SW PUB 15 WSW FCL CPR 35 SW GCC GCC 35 ENE 81V 20 SW PHP 15
WNW VTN 30 ESE MHN 40 WSW MCK 25 SE LHX 15 NNE TAD.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 NNW APN 20 W SBN
20 E MVN 40 NE DYR 55 ENE MKL 20 NNW BNA 25 SE LUK 15 ESE PSB 10 SSW
JFK ...CONT... 35 SE AUG 60 NNE BML ...CONT... 15 SW DUG 50 SSW GNT
20 ENE FMN 40 ESE 4HV 35 NNE MLF 10 W ENV 25 NNW TWF 35 N 27U 45 SE
CTB 50 E HVR 30 S DIK 50 SW AXN 45 E STC 25 ENE IWD 15 NW CMX.

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF ERN WY...SW
SD...WRN NEB AND ERN CO...

...HIGH PLAINS...
SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG AND EAST OF A
LEE TROUGH EXTENDING SWD ACROSS SE WY AND ECNTRL CO. SFC WINDS ARE
CURRENTLY BACKED TO THE EAST OF THE TROUGH WHICH IS RESULTING IN
LOCALLY ENHANCED DEEP LAYER SHEAR VALUES OF 30 TO 35 KT ACROSS THE
SLIGHT RISK AREA. IN ADDITION...OBJECTIVE ANALYSIS CURRENTLY SHOWS
1000 TO 1500 J/KG OF MLCAPE EAST OF THE TROUGH...FROM DENVER
EXTENDING NWD TO ABOUT CHADRON NEB. THIS COMBINED WITH THE SHEAR AND
HIGH LCLS...WILL FAVOR HIGH-BASED MULTICELL STORMS. THE SEVERE
THREAT SHOULD BE GREATEST ALONG THE AXIS OF INSTABILITY...WITH LARGE
HAIL LIKELY WITH THE STRONGEST CELLS CONSIDERING 850 TO 500 MB LAPSE
RATES EXCEED 7.5 C/KM IN THIS CORRIDOR. ISOLATED WIND DAMAGE WILL
ALSO BE POSSIBLE CONSIDERING SFC TEMP-DEWPOINT SPREADS EXCEED 20
DEGREES F. THE SEVERE THREAT SHOULD CONTINUE THROUGH THE EARLY
EVENING HOURS...DECREASING SLOWLY IN THE EVENING AS INSTABILITY
DECREASES ACROSS THE REGION.

...CNTRL AND ERN TX/WRN LA...
OBJECTIVE ANALYSIS CURRENTLY SHOWS A QUASI-STATIONARY FRONT
EXTENDING NEWD FROM CNTRL TX INTO FAR SE OK. A COLD POOL FROM THIS
MORNINGS CONVECTION IS CURRENTLY PRESENT IN THE DALLAS/FT WORTH
AREA. STRONG SFC HEATING SOUTH OF THE FRONT AND SOUTH OF THE COLD
POOL HAS CREATED MODERATE INSTABILITY SOUTH OF A LINE FROM NEAR DEL
RIO EXTENDING EWD INTO THE HOUSTON AREA. SCATTERED THUNDERSTORMS
HAVE DEVELOPED ALONG THE INSTABILITY GRADIENT AND THE STORMS SHOULD
CONTINUE MOVING SLOWLY SSEWD THIS AFTERNOON INTO INCREASING
INSTABILITY. ALTHOUGH DEEP LAYER SHEAR IS WEAK...THE INSTABILITY
COMBINED WITH HIGH SFC DEWPOINTS AND STEEP LOW-LEVEL LAPSE RATES MAY
RESULT IN A MARGINAL WIND DAMAGE THREAT MAINLY NEAR PEAK HEATING.

..BROYLES.. 07/29/2004

...NOTICE...
FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.








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