Severe Local Storm Watch and Watch Cancellation Msg
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
WWUS20 KWNS 202222
SEL5
SPC WW 202222
MIZ000-OHZ000-LEZ000-LHZ000-210300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 505
NWS STORM PREDICTION CENTER NORMAN OK
620 PM EDT SAT SEP 20 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
  EASTERN LOWER MICHIGAN
  NORTHWEST OHIO
  LAKE ERIE
  LAKE HURON

* EFFECTIVE THIS SATURDAY EVENING FROM 620 PM UNTIL 1100 PM EDT.

* PRIMARY THREATS INCLUDE...
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH
NORTHEAST OF BAD AXE MICHIGAN TO 25 MILES SOUTHWEST OF FINDLAY
OHIO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 503...WW 504...

DISCUSSION...PRE-FRONTAL NRN IND/S CNTRL LWR MI SQLN EXPECTED TO
CONTINUE E THROUGH MID-EVE. FAIRLY WELL-ORGANIZED NATURE OF EXISTING
STORMS...PRESENCE OF AMPLE WLY DEEP SHEAR...AND APPRECIABLE
LARGE-SCALE FORCING FOR ASCENT PER UPSTREAM IMPULSE IN WATER VAPOR
AND VWP DATA SUGGEST POTENTIAL FOR ADDITIONAL DMGG WIND GUSTS EWD
INTO SE LWR MI/NW OH.

FARTHER N...ADDITIONAL PRE-FRONTAL STORMS HAVE FORM/STRENGTHENED IN
THE PAST HOUR ALONG A SW-NE AXIS NEAR MBS/SAGINAW BAY /REF MCD
1744/. WHILE BUOYANCY IS MORE LIMITED IN THIS REGION RELATIVE TO
POINTS S...ASCENT/WIND FIELDS WILL BE STRONGER...POTENTIALLY
SUPPORTING ISOLD DMGG GUSTS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24035.


...CORFIDI


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