Severe Storm Outlook Narrative (AC)
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 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
000
ACUS11 KWNS 181958
SWOMCD
SPC MCD 181957
FLZ000-182130-

MESOSCALE DISCUSSION 0365
NWS STORM PREDICTION CENTER NORMAN OK
0257 PM CDT FRI APR 18 2014

AREAS AFFECTED...CNTRL AND NCNTRL FL

CONCERNING...SEVERE THUNDERSTORM WATCH 83...

VALID 181957Z - 182130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 83
CONTINUES.

SUMMARY...THREAT FOR ISOLATED STRONG TO DAMAGING WIND GUSTS WILL
PERSIST THROUGH 21Z AS SQUALL LINE CONTINUES ACROSS CNTRL AND NCTNRL
FL. PORTIONS OF THE LINE WILL BEGIN TO EXIT WW 83 BY 21Z. WW CAN BE
LOCALLY EXTENDED IN AREA IF NECESSARY. HOWEVER...OVERALL THREAT DOES
NOT APPEAR PARTICULARLY ROBUST...AND ANOTHER WW ISSUANCE IS NOT
EXPECTED UNLESS TRENDS BEGIN TO SUGGEST OTHERWISE.

DISCUSSION...SQUALL LINE CONTINUES EWD THROUGH CNTRL FL AT AROUND 30
KT. A WELL DEFINED MCV WAS LOCATED ALONG THE NRN END OF THE LINE. SO
FAR ONLY SUB-SEVERE AND MARGINALLY SEVERE WIND GUSTS HAVE BEEN
REPORTED WITH THE STRONGER STORMS. OVERALL DESTABILIZATION OF THE
BOUNDARY LAYER HAS BEEN TEMPERED BY THE CIRRUS CANOPY.
HOWEVER...TEMPERATURES IN THE LOW 80S ARE SUPPORTING UP TO 1000 J/KG
MLCAPE AND STORMS WILL LIKELY CONTINUE FORWARD PROPAGATING EWD
THROUGH THE REMAINDER OF THE WEAKLY CAPPED WARM SECTOR. THE STRONGER
STORMS MAY CONTINUE TO PRODUCE STRONG TO AT LEAST MARGINALLY SEVERE
WIND GUSTS. HOWEVER...GIVEN WEAKER LOW-MID LEVEL FLOW WITH EWD
EXTENT ACROSS CNTRL FL AND THE MODEST THERMODYNAMIC
ENVIRONMENT...ANOTHER WW ISSUANCE EAST OF CURRENT WW WILL PROBABLY
NOT BE NECESSARY.

..DIAL.. 04/18/2014

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MLB...TBW...JAX...

LAT...LON   28558213 29198249 29408195 28588143 27298127 26998176
            27828178 28558213




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.