Severe Storm Outlook Narrative (AC)
Issued by NWS

Current Version | Previous Version | Graphics & Text | 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
000
ACUS11 KWNS 102211
SWOMCD
SPC MCD 102211
PAZ000-OHZ000-INZ000-102315-

MESOSCALE DISCUSSION 1711
NWS STORM PREDICTION CENTER NORMAN OK
0511 PM CDT WED SEP 10 2014

AREAS AFFECTED...NRN OH INTO CENTRAL INDIANA

CONCERNING...TORNADO WATCH 501...

VALID 102211Z - 102315Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 501 CONTINUES.

SUMMARY...ISOLATED TORNADO/DAMAGING WIND RISK WILL CONTINUE FOR THE
NEXT COUPLE OF HOURS.

DISCUSSION...A BROKEN BAND OF DISCRETE CELLS FORMED EARLIER THIS
AFTERNOON ACROSS NE OH...AND THESE STORMS HAVE EXHIBITED LOW-TOPPED
SUPERCELL CHARACTERISTICS WITH A COUPLE OF REPORTED TORNADOES.  THIS
CONVECTION RESIDES IN AN ENVIRONMENT THAT IS MOIST WITH WEAK
SURFACE-BASED BUOYANCY AND STRONG LOW-LEVEL SHEAR PER THE CLE VWP.
THIS CONVECTION WILL BE LARGELY DIURNAL WITH A DECREASE IN
COVERAGE/INTENSITY EXPECTED AFTER 00-01Z WITH THE LOSS OF DAYTIME
HEATING.  AT THIS TIME...THE TORNADO RISK IS NOT EXPECTED TO SPREAD
E OF THE CURRENT WATCH CONFIGURATION THAT EXTENDS EWD TO THE PA
BORDER.

FARTHER SW...CONVECTION IS LOOSELY ORGANIZED ALONG A DIFFUSE
PRE-FRONTAL TROUGH/CONFLUENCE AXIS COINCIDENT WITH A LEAD SHORTWAVE
TROUGH...FROM NW OH INTO CENTRAL INDIANA.  LOW-LEVEL HODOGRAPH
CURVATURE IS LESS THAN AREAS FARTHER TO THE NE IN OH...BUT STILL
SUFFICIENT FOR ROTATING STORMS.  THUS...AN ISOLATED TORNADO AND A
FEW DAMAGING GUSTS WILL REMAIN POSSIBLE FOR THE NEXT FEW HOURS.

..THOMPSON.. 09/10/2014

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

ATTN...WFO...PBZ...CLE...ILN...IWX...IND...

LAT...LON   42118028 41438019 40918038 40578112 40308174 40108305
            39518532 39218718 39608724 40258565 41068398 41708335
            41828319 41638242 41718165 41988103 42118028



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