Mar- 6-2005 2000 UTC Day 1 Convective Outlook
Updated: Sun Mar 6 19:50:07 UTC 2005
Categorical Graphic
20050306 2000 UTC Day 1 Outlook Graphic
Probabilistic Tornado Graphic
20050306 2000 UTC Day 1 Tornado Probabilities Graphic
Probabilistic Damaging Wind Graphic
20050306 2000 UTC Day 1 Damaging Wind Probabilities Graphic
Probabilistic Large Hail Graphic
20050306 2000 UTC Day 1 Large Hail Probabilities Graphic
   SPC AC 061948
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0148 PM CST SUN MAR 06 2005
   
   VALID 062000Z - 071200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 W YUM 40 W TRM 15
   NE RAL 15 WSW DAG 40 NNW IGM 55 SSE PGA 4SL 40 NE CVS 45 N ABI 40
   ENE AUS 35 NNE VCT 50 ENE CRP ...CONT... 45 S CRP 50 NNE MFE 65 WNW
   MFE.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 SE FYV 35 WSW FYV
   30 E BVO 30 E EMP 50 WNW LWD 10 W ALO 25 ENE LNR 45 NE MKG 15 S MBS
   25 NNE ARB 40 S MIE 25 NE PAH 60 WSW ARG 35 SE FYV.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...LOWER OH VALLEY/MID-MS VALLEY...
   UPPER-TROUGH EVIDENT ON WATER VAPOR OVER THE NRN HIGH PLAINS WILL
   AMPLIFY AND MOVE QUICKLY SEWD INTO THE UPPER MS VALLEY BY THIS
   EVENING. THIS WILL DRIVE A COLD FRONT QUICKLY SWD ACROSS THE UPPER
   MIDWEST INTO THE MID-MS VALLEY THIS EVENING WITH CONVECTION LIKELY
   DEVELOPING ALONG IT DURING THE EVENING HOURS AS THE LOW-LEVEL JET
   INCREASES. STORMS SHOULD ORGANIZE AND SPREAD QUICKLY SEWD INTO NRN
   MO AND IL OVERNIGHT.
   
   SFC ANALYSIS CURRENTLY SHOWS A MOIST AXIS ACROSS CNTRL AND ERN KS
   WHERE 40-50 F SFC DEWPOINTS EXIST. THIS LOW-LEVEL MOISTURE SHOULD
   ADVECT NEWD ALONG AND AHEAD OF THE COLD FRONT THROUGH THE EVENING
   HOURS WITH WEAK INSTABILITY DEVELOPING BY LATE EVENING ACROSS NRN MO
   AND WRN IL. FORECAST SOUNDINGS IN NRN MO AT 06Z SHOW UNIDIRECTIONAL
   WIND PROFILES ABOVE THE BOUNDARY LAYER WITH MODERATE DEEP LAYER
   SHEAR. CONSIDERING THE STRONG ASCENT AND FAST CELL MOTION...THIS MAY
   BE ENOUGH FOR A MARGINAL WIND DAMAGE THREAT DURING THE OVERNIGHT
   HOURS. THE POTENTIAL FOR STRONG WINDS WILL DEPEND ON HOW QUICKLY THE
   LOW-LEVEL MOISTURE IN KS CAN ADVECT NEWD. FORECAST SOUNDINGS SHOW
   MARGINAL LOW-LEVEL LAPSE RATES WHICH SHOULD KEEP ANY SEVERE THREAT
   VERY ISOLATED.
   
   ...SRN AZ/SRN NM/WEST TX...
   SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP IN THE HIGHER
   TERRAIN ACROSS SRN NM AND SRN AZ THIS AFTERNOON. AS THE UPPER-LOW
   OVER NWRN MEXICO MOVES EWD THIS AFTERNOON...INCREASING LARGE-SCALE
   ASCENT WILL SPREAD THUNDERSTORM DEVELOPMENT EWD ACROSS FAR WEST TX
   AS WELL. OBJECTIVE ANALYSIS SHOWS SBCAPE VALUES CURRENTLY RANGING
   FROM 500 TO 1000 J/KG ACROSS THE REGION WITH 500 MB TEMPS RANGING
   FROM -18 TO -22C. THIS IS CREATING STEEP MID-LEVEL LAPSE RATES WHICH
   COMBINED WITH MODERATE TO STRONG VERTICAL SHEAR WILL BE FAVORABLE
   FOR HAIL WITH THE STRONGER CELLS. THE STRONGEST VERTICAL SHEAR IS
   PRESENT OVER SRN NM WITH 0-6 KM SHEAR VALUES OF 60 TO 70 KT. THIS
   MAY BE ENOUGH FOR A SMALL SUPERCELL THREAT WITH THE STORMS CURRENTLY
   DEVELOPING WEST OF THE I-25 CORRIDOR. A MARGINAL WIND DAMAGE THREAT
   WILL BE POSSIBLE AS THE STORMS TRACK ENEWD ACROSS SRN NM. A MARGINAL
   SEVERE THREAT IS POSSIBLE THROUGH THE AFTERNOON HOURS...WITH A
   DECREASE LIKELY BY THIS EVENING AS THE BOUNDARY LAYER COOLS OFF.
   
   ..BROYLES.. 03/06/2005
   
   ...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.
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z