Storm Prediction Center Severe Thunderstorm Watch 640

Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.

   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 640...RESENT
   NWS STORM PREDICTION CENTER NORMAN OK
   655 PM EDT MON JUL 24 2006
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WESTERN AND NORTHERN LOWER MICHIGAN
          LAKE HURON
          LAKE MICHIGAN
   
   EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 655 PM UNTIL
   100 AM EDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST
   SOUTHWEST OF MANISTEE MICHIGAN TO 20 MILES SOUTHEAST OF ALPENA
   MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 639...
   
   DISCUSSION...TSTMS NOW CROSSING LK MI MAY REDEVELOP E/NE INTO WARMER
   BNDRY LYR ENVIRONMENT OVER NRN LWR MI DURING THE NEXT FEW HOURS. 
   ACTIVITY APPEARS TO BE SUPPORTED PRIMARILY BY CONVERGENCE ALONG LOW
   LEVEL CONFLUENCE AXIS ORIENTED WSW/ENE ACROSS WI INTO LK MI. 
   STRENGTHENING AND VEERING LLJ DURING THE EVENING MAY ALLOW AXIS TO
   SHIFT E INTO LWR MI...ENHANCING POTENTIAL FOR NEW STORM DEVELOPMENT
   IN THAT REGION.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 28030.
   
   
   ...CORFIDI

Note: The parallelogram is only an approximation to the watch, the actual watch is defined by the outlines of the counties contained in it.

   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 640...RESENT
   NWS STORM PREDICTION CENTER NORMAN OK
   655 PM EDT MON JUL 24 2006
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WESTERN AND NORTHERN LOWER MICHIGAN
          LAKE HURON
          LAKE MICHIGAN
   
   EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 655 PM UNTIL
   100 AM EDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST
   SOUTHWEST OF MANISTEE MICHIGAN TO 20 MILES SOUTHEAST OF ALPENA
   MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 639...
   
   DISCUSSION...TSTMS NOW CROSSING LK MI MAY REDEVELOP E/NE INTO WARMER
   BNDRY LYR ENVIRONMENT OVER NRN LWR MI DURING THE NEXT FEW HOURS. 
   ACTIVITY APPEARS TO BE SUPPORTED PRIMARILY BY CONVERGENCE ALONG LOW
   LEVEL CONFLUENCE AXIS ORIENTED WSW/ENE ACROSS WI INTO LK MI. 
   STRENGTHENING AND VEERING LLJ DURING THE EVENING MAY ALLOW AXIS TO
   SHIFT E INTO LWR MI...ENHANCING POTENTIAL FOR NEW STORM DEVELOPMENT
   IN THAT REGION.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 28030.
   
   
   ...CORFIDI

Note: The parallelogram is only an approximation to the watch, the actual watch is defined by the outlines of the counties contained in it.
Note: Click for Watch Status Reports.

   WOUS64 KWNS 242251
   WOU0
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 640...RESENT
   NWS STORM PREDICTION CENTER NORMAN OK
   655 PM EDT MON JUL 24 2006
   
   SEVERE THUNDERSTORM WATCH 640 IS IN EFFECT UNTIL 100 AM EDT
   FOR THE FOLLOWING LOCATIONS
   
   MIC001-007-009-011-019-029-035-039-051-055-069-073-079-085-089-
   101-105-107-113-119-123-127-129-133-135-137-143-165-250500-
   /O.NEW.KWNS.SV.A.0640.060724T2255Z-060725T0500Z/
   
   MI 
   .    MICHIGAN COUNTIES INCLUDED ARE
   
   ALCONA               ALPENA              ANTRIM              
   ARENAC               BENZIE              CHARLEVOIX          
   CLARE                CRAWFORD            GLADWIN             
   GRAND TRAVERSE       IOSCO               ISABELLA            
   KALKASKA             LAKE                LEELANAU            
   MANISTEE             MASON               MECOSTA             
   MISSAUKEE            MONTMORENCY         NEWAYGO             
   OCEANA               OGEMAW              OSCEOLA             
   OSCODA               OTSEGO              ROSCOMMON           
   WEXFORD              
   
   
   LHZ348-349-362-LMZ323-344-345-848-849-869-250500-
   /O.NEW.KWNS.SV.A.0640.060724T2255Z-060725T0500Z/
   
   CW 
   
   .    ADJACENT COASTAL WATERS INCLUDED ARE
   
   PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
   NATIONAL MARINE SANCTUARY 
   
   STURGEON PT TO ALABASTER MI 
   
   LAKE HURON/PRESQUE ISLE LT. TO ALABASTER MI EASTWARD BEYOND 5 NM
   OFF SHORE TO US-CANADIAN BORDER 
   
   GRAND TRAVERSE BAY/GRAND TRAVERSE LIGHT TO NORWOOD MI 
   
   SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI 
   
   MANISTEE TO SLEEPING BEAR POINT MI 
   
   WHITEHALL TO PENTWATER MI 
   
   PENTWATER TO MANISTEE MI 
   
   LAKE MICHIGAN WHITEHALL TO MAINISTE MI 5 NM TO MID-LINE OF LAKE 
   
   ATTN...WFO...APX...GRR...

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is defined by the list of counties (WOU).

   SAW0 
   WW 640 SEVERE TSTM MI LH LM 242255Z - 250500Z
   AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
   50WSW MBL/MANISTEE MI/ - 20SE APN/ALPENA MI/
   ..AVIATION COORDS.. 50NM N/S /55SE GRB - 26N ASP/
   HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28030.
   
   LAT...LON 44798718 45668327 44088327 43188718
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU0.

Watch 640 Status Report Messages:

STATUS REPORT #2 ON WW 640

VALID 250250Z - 250340Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE OSC
TO 5 WNW HTL TO 15 S PLN.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1621

..DIAL..07/25/06

ATTN...WFO...APX...GRR...

&&

STATUS REPORT FOR WS 640 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MIC001-007-039-069-119-129-135-137-250340-

MI 
.    MICHIGAN COUNTIES INCLUDED ARE

ALCONA		     ALPENA		 CRAWFORD	     
IOSCO		     MONTMORENCY	 OGEMAW 	     
OSCODA		     OTSEGO		 
$$


LHZ348-349-362-250340-

CW 

.    ADJACENT COASTAL WATERS INCLUDED ARE

PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY 

STURGEON PT TO ALABASTER MI 

LAKE HURON/PRESQUE ISLE LT. TO ALABASTER MI EASTWARD BEYOND 5 NM
OFF SHORE TO US-CANADIAN BORDER 

$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$

STATUS REPORT #1 ON WW 640

VALID 250140Z - 250240Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW MBS TO
10 S HTL TO 35 WSW HTL TO 35 NNE TVC.

..DIAL..07/25/06

ATTN...WFO...APX...GRR...

&&

STATUS REPORT FOR WS 640 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MIC001-007-009-011-029-039-051-069-079-113-119-129-135-137-143-
250240-

MI 
.    MICHIGAN COUNTIES INCLUDED ARE

ALCONA		     ALPENA		 ANTRIM 	     
ARENAC		     CHARLEVOIX 	 CRAWFORD	     
GLADWIN 	     IOSCO		 KALKASKA	     
MISSAUKEE	     MONTMORENCY	 OGEMAW 	     
OSCODA		     OTSEGO		 ROSCOMMON	     
$$


LHZ348-349-362-250240-

CW 

.    ADJACENT COASTAL WATERS INCLUDED ARE

PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY 

STURGEON PT TO ALABASTER MI 

LAKE HURON/PRESQUE ISLE LT. TO ALABASTER MI EASTWARD BEYOND 5 NM
OFF SHORE TO US-CANADIAN BORDER 

$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$