SPC AC 100105
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0805 PM CDT SAT APR 09 2005
   
   VALID 100100Z - 101200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 40 NE
   HLC 40 NNW GLD 35 SE SNY 25 ENE SNY 15 S MHN ANW 40 SSE 9V9 20 SSE
   ATY 30 W RWF 20 ESE OTG 20 SSW SPW 40 NE OMA 30 S OMA 40 NE HLC.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 NW ELO 45 NNW VOK
   35 NW STL 40 SE SZL 10 N OJC 40 NNW P28 EHA 25 E LVS 30 NE ONM 45
   SSW SOW 45 WNW PHX 30 E EED 40 SSW P38 15 SW ENV 15 ENE PIH 35 E COD
   30 ENE 81V 40 SE RAP 40 SSW PIR ABR 30 SE JMS 40 ESE P24 40 SSE SDY
   50 W GDV 70 NW GGW.
   
   ...THERE IS A SLGT RISK OF SVR TSTMS TONIGHT FROM FAR NERN CO TO
   SWRN MN...
   
   ...NERN CO TO SWRN MN...
   UPPER TROUGH OVER THE FOUR CORNERS REGION THIS EVENING WILL DEVELOP
   INTO A CLOSED LOW AS IT MOVES EWD OVERNIGHT TO NM/SRN CO BY 12Z
   SUNDAY.  AT THE SURFACE...LOW PRESSURE CENTER OVER SERN CO WILL MOVE
   EWD OVERNIGHT INTO SWRN KS.  MEANWHILE...A COLD FRONT CURRENTLY
   EXTENDING SEWD FROM A SURFACE LOW OVER FAR NERN MT TO ERN SD AND
   THEN SWWD TO NERN CO WILL MOVE SLOWLY EAST AND SE OVERNIGHT.
   
   LARGE SCALE ASCENT AHEAD OF THE FOUR CORNERS TROUGH WILL CONTINUE TO
   SUPPORT HIGH BASED THUNDERSTORMS FROM NERN CO AND EVENTUALLY INTO
   PORTIONS OF SWRN NEB THIS EVENING.  ADDITIONAL STORMS ARE EXPECTED
   TO DEVELOP THIS EVENING ENEWD ALONG/N OF THE SURFACE BOUNDARY OVER
   MUCH OF NEB AND LATER TONIGHT OVER SERN SD/SWRN MN AND POTENTIALLY
   WRN IA.  THE ACTIVITY OVER NEB AND NEWD WILL BE ASSOCIATED WITH
   INCREASING LARGE SCALE ASCENT/DIFFLUENT FLOW ALOFT AS A 60-70 KT
   SWLY MID LEVEL JET NOSES INTO WRN KS AND A BROAD SLY LLJ STRENGTHENS
   TO 50 KT OVER THE SRN/CENTRAL PLAINS THIS EVENING.  THESE SLY LOW
   LEVEL WINDS WILL CONTINUE TO ADVECT MOISTURE NWD TO ALONG THE
   SURFACE BOUNDARY.  THE MOISTENING AIR MASS COMBINED WITH STEEP MID
   LEVEL LAPSE RATES /AROUND 8.0 C/KM PER 00Z SOUNDINGS OVER NEB/
   SUPPORT INCREASING INSTABILITY WITH MUCAPE VALUES UP TO 1000-1500
   J/KG FROM SWRN NEB TO SERN SD. INCREASING DEEP LAYER SHEAR 40-50 KT
   AND MODERATE INSTABILITY WILL RESULT IN SUPERCELLS WITH LARGE HAIL
   AND DAMAGING WINDS BEING THE PRIMARY THREATS.
   
   THUNDERSTORMS WITH AN ATTENDANT HAIL AND STRONG WIND GUST THREATS
   WILL DEVELOP NEWD INTO SERN SD/SWRN MN AND POTENTIALLY WRN IA
   OVERNIGHT WITHIN ZONE OF WAA ASSOCIATED WITH STRONG LLJ.
   
   ...NERN MT...
   THUNDERSTORM POTENTIAL OVER NERN MT WILL DECREASE THIS EVENING AS
   ACTIVITY CONTINUES TO MOVE NNEWD INTO CANADA PER LARGE SCALE ASCENT
   ASSOCIATED WITH SURFACE AND MID LEVEL LOWS MOVING INTO CANADA
   TONIGHT.
   
   ..PETERS.. 04/10/2005
   
   ...NOTICE...
   THE STATION RELATIVE POINTS IN THIS PRODUCT ARE NOW AVAILABLE
   SEPARATELY UNDER THE WMO HEADINGS WUUS01 PTSDY1...
   WUUS02 PTSDY2...WUUS03 PTSDY3.  THE INCLUSION OF POINTS
   IN THIS DISCUSSION WILL BE DISCONTINUED AFTER THE 2005
   CONVECTIVE SEASON.  A PUBLIC NOTIFICATION STATEMENT (PNS)
   WILL PROVIDE DETAILS ON THE TRANSITION.
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z