Severe Storm Outlook Narrative (AC)
Issued by NWS

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000
ACUS02 KWNS 020601
SWODY2
SPC AC 020600

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0100 AM CDT TUE JUN 02 2015

VALID 031200Z - 041200Z

...THERE IS AN ENH RISK OF SVR TSTMS ACROSS THE CENTRAL HIGH
PLAINS...

...THERE IS A SLGT RISK OF SVR TSTMS FROM PORTIONS OF WY TO THE
CENTRAL PLAINS...

...THERE IS A MRGL RISK OF SVR TSTMS FROM THE NORTHERN INTERMOUNTAIN
REGION TO THE UPPER MIDWEST...

...THERE IS A MRGL RISK OF SVR TSTMS ACROSS THE SOUTHEAST STATES...

...SUMMARY...
SEVERE THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY ESPECIALLY ACROSS
PORTIONS OF THE CENTRAL PLAINS.

...CENTRAL PLAINS/NORTHERN HIGH PLAINS/INTERIOR WY...
WEAK HEIGHT FALLS WILL OCCUR MAINLY DURING THE LAST HALF OF THE
PERIOD WITH MODERATELY STRONG SOUTHWESTERLY MID/HIGH-LEVEL WINDS
EXTENDING NORTHEASTWARD INTO THE NORTHERN/CENTRAL HIGH PLAINS. A
DEEPENING SURFACE LOW ACROSS THE SOUTH-CENTRAL HIGH PLAINS WILL
CONTRIBUTE TO INCREASINGLY MOIST/POST-FRONTAL UPSLOPE TRAJECTORIES
ACROSS THE CENTRAL HIGH PLAINS AND CO/WY FRONT RANGE VICINITY. THE
MOST LIKELY SCENARIO WILL BE FOR STORMS TO INCREASE/DEVELOP EASTWARD
WEDNESDAY AFTERNOON/EARLY EVENING FROM NEAR THE CO/SOUTHEAST WY
FRONT RANGE INTO THE EASTERN CO/SOUTHWEST NEB/NORTHWEST KS HIGH
PLAINS. VEERING WIND PROFILES WITH AROUND 35-40 KT OF EFFECTIVE
SHEAR WILL SUPPORT SUPERCELLS WITHIN A MOIST/MODERATELY UNSTABLE
ENVIRONMENT...WITH RELATED POTENTIAL FOR VERY LARGE HAIL AND A
TORNADO RISK. WITH AID OF A NOCTURNALLY STRENGTHENING LOW-LEVEL
JET...AN MCS SEEMS LIKELY TO EVOLVE/SPREAD GENERALLY EASTWARD
WEDNESDAY NIGHT INTO WESTERN KS/SOUTHERN NEB...WITH DAMAGING WINDS A
POSSIBILITY ASIDE FROM PERIODIC HAIL.

FARTHER WEST...OTHER POTENTIALLY SEVERE THUNDERSTORMS ARE EXPECTED
TO DEVELOP ACROSS INTERIOR WY AND PERHAPS OTHER PARTS OF THE
NORTHERN GREAT BASIN/NORTHERN INTERMOUNTAIN REGION WEDNESDAY
AFTERNOON/EVENING.

...MIDDLE MO VALLEY/UPPER MIDWEST...
THE POTENTIAL FOR ONE OR MORE UPSTREAM MCS/S TUESDAY NIGHT
COMPLICATES THE FORECAST SCENARIO FOR WEDNESDAY...WITH THE POTENTIAL
FOR LINGERING CLOUD COVER/PRECIPITATION AND POSSIBLE OUTFLOW NEAR
AND AHEAD OF A SOUTHEASTWARD-ADVANCING FRONT. SHOULD SUFFICIENT
DESTABILIZATION OCCUR...SOME STRONGER/POTENTIALLY STORMS COULD
REDEVELOP WEDNESDAY AFTERNOON/EVENING...PERHAPS ALONG THE FRONT
AND/OR PERHAPS MORE LIKELY IN VICINITY OF RESIDUAL EARLY DAY
OUTFLOW. A SECONDARY ROUND OF MCS DEVELOPMENT IS EVEN A POSSIBILITY
WEDNESDAY LATE AFTERNOON/NIGHT.

...SOUTHEAST STATES...
A CLOSED UPPER LOW WILL CONTINUE TO MOVE VERY SLOWLY OVER THE
SOUTHERN APPALACHIANS VICINITY ON WEDNESDAY. TO THE EAST/SOUTHEAST
OF THIS UPPER LOW...SOME STRONGER STORMS CAPABLE OF LOCALLY DAMAGING
WINDS AND POTENTIALLY A FEW INSTANCES OF HAIL COULD OCCUR WEDNESDAY
AFTERNOON/EARLY EVENING.

..GUYER.. 06/02/2015



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