www.srh.weather.gov   
NOAA logo - Click to go to the NOAA homepage   NWS logo
Severe Storm Outlook Narrative (AC)
Enter Your "City, ST" or zip code   
Current Version              Previous Version:    01  02  03  04  05  06  07  08  09  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  
   31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  
[Printable]
679
ACUS01 KWNS 171243
SWODY1
SPC AC 171241

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0741 AM CDT THU APR 17 2014

VALID 171300Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...SUMMARY...
A COUPLE OF STRONG STORMS ARE POSSIBLE TODAY ACROSS SOUTH
FLORIDA...WITH THE RISK FOR HAIL AND WIND GUSTS NEAR SEVERE LIMITS.

...SYNOPSIS...
MULTIPLE FLOW STREAMS ARE PRESENT OVER THE CONUS...WITH THE STRONGER
NRN STREAM FROM THE PAC NW TO THE GREAT LAKES...AND A MORE FRACTURED
SRN STREAM FROM SRN CA TO THE GULF COAST.  ISOLATED THUNDERSTORMS
WILL BE POSSIBLE THIS AFTERNOON/EVENING ACROSS THE NW GREAT
BASIN...ON THE EDGE OF THE STEEPER LAPSE RATE PLUME AND IN ADVANCE
OF THE SHORTWAVE TROUGH MOVING INLAND OVER THE PAC NW.  WITHIN THE
SRN STREAM...A LEAD SHORTWAVE TROUGH WILL EJECT ENEWD FROM NE MEXICO
AND BEGIN TO PHASE WITH A SEPARATE TROUGH MOVING ESEWD FROM THE SRN
HIGH PLAINS.  CONVECTION IS ALREADY INCREASING ACROSS THE NW GULF OF
MEXICO THIS MORNING...IN WHAT WILL LIKELY BECOME AN EXTENSIVE
THUNDERSTORM CLUSTER OVER THE CENTRAL/ERN GULF BY EARLY FRIDAY.  THE
NWRN AND NRN FRINGES OF THIS DEVELOPING CLUSTER WILL CONTINUE TO
BRUSH THE GULF COAST FROM TX TO THE FL PANHANDLE.

...S FL TODAY...
A WARM FRONT WILL DRIFT NWD INTO CENTRAL FL TODAY AND BECOME
DIFFUSE.  A MARITIME TROPICAL AIR MASS S OF THE BOUNDARY /70-72 F
BOUNDARY LAYER DEWPOINTS/ AND DAYTIME HEATING ACROSS S FL WILL
CONTRIBUTE TO MODERATE BUOYANCY /MLCAPE AROUND 1500 J PER KG/.
LOCAL SEA AND LAKE BREEZE CIRCULATIONS WILL HELP FOCUS THE
DEVELOPMENT OF SLOW-MOVING THUNDERSTORM CLUSTERS IN AN ENVIRONMENT
WITH LOW-MIDLEVEL FLOW/SHEAR THAT WILL SLOWLY WEAKEN WITH TIME.
HOWEVER...STORM PERSISTENCE/ORGANIZATION COULD BE AIDED BY
RELATIVELY STRONG ANVIL-LEVEL FLOW/VENTING ALOFT...WHILE SEASONABLY
COOL MIDLEVEL TEMPERATURES OF -11 TO -12 C AT 500 MB SUGGEST SOME
RISK FOR MARGINALLY SEVERE HAIL AND GUSTY OUTFLOW WINDS.

..THOMPSON/DEAN.. 04/17/2014




National Weather Service
Disclaimer
Last Modified: August 31, 2005
Privacy Policy