Severe Weather Outlook for July 22, 2008

This page has information on possible severe weather on Tuesday as provided by the National Weather Service Storm Prediction Center. You can also view outlooks for today and tomorrow. This map and discussion are updated early each morning.

Refer to the text discussion below the map for descriptions of possible severe weather threats.

Related Pages: Mesoscale Discussions | Current Severe Watches | Recent Severe Weather Activity
Excessive Rainfall Probabilities | Tropical Weather Outlook | US Warnings and Advisories

Hazardous Weather Forecast Maps:

Severe Weather Discussion:

000
ACUS03 KWNS 200722
SWODY3
SPC AC 200720

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0220 AM CDT SUN JUL 20 2008

VALID 221200Z - 231200Z

...NO SVR TSTM AREAS FORECAST...

...OH VALLEY/TN VALLEY/MID MS VALLEY...

UPPER TROUGH WILL HOLD OVER THE GREAT LAKES/OH VALLEY REGION...WITH
ONLY A SLIGHT SWD SHIFT EXPECTED DURING THE DAY3 PERIOD.  AS COLD
FRONT SAGS SWD ACROSS THE OH VALLEY INTO THE TN VALLEY LOW LEVEL
CONVERGENCE WILL EASILY FORCE DEEP CONVECTION BY MID DAY AS BOUNDARY
LAYER WARMS BENEATH REASONABLY COOL MID LEVEL TEMPERATURES ALONG SRN
FRINGE OF UPPER TROUGH.  THE MOST LIKELY AXIS FOR SUSTAINED ROBUST
UPDRAFTS WILL OCCUR ALONG AN AXIS FROM WV...KY/TN INTO MO.  FORECAST
SOUNDINGS SUGGEST THUNDERSTORMS WILL FORM BY 18-20Z WITHIN
WEAKLY-MODEST SHEARED ENVIRONMENT AND SPREAD SEWD WITHIN WNWLY FLOW
REGIME.  A FEW STORMS COULD PRODUCE SOME HAIL OR GUSTY WINDS.

...NRN HIGH PLAINS...

UPPER RIDGE WILL BE NUDGED EWD ACROSS THE NRN HIGH PLAINS TUESDAY.
THIS SHOULD RESULT IN A STRENGTHENING LEE TROUGH ACROSS ERN MT INTO
THE NEB PANHANDLE.  STRONG HEATING ALONG THIS ZONE OF CONVERGENCE
SHOULD FOCUS POTENTIALLY ROBUST CONVECTION ALONG A NARROW AXIS FROM
NEAR THE BLACK HILLS NWD INTO SRN SASKATCHEWAN.  ALTHOUGH HIGH LEVEL
FLOW WILL BE SOMEWHAT WEAK...VEERING PROFILES MAY PROVE ADEQUATE FOR
ONE OR TWO ISOLATED SEVERE SLOW MOVING THUNDERSTORMS.

..DARROW.. 07/20/2008

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