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 320
NWS STORM PREDICTION CENTER NORMAN OK
625 PM EDT MON JUN 1 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
FAR EAST-CENTRAL INDIANA
NORTHWEST INTO CENTRAL OHIO
LAKE ERIE
EFFECTIVE THIS MONDAY EVENING FROM 625 PM UNTIL 1100 PM EDT.
HAIL TO 2 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 65
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST
NORTHEAST OF TOLEDO OHIO TO 20 MILES SOUTHEAST OF DAYTON OHIO.
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 318...WW 319...
DISCUSSION...CLUSTER OF STRONG/SEVERE STORMS EXPECTED TO CONTINUE
ESEWD ACROSS WW THIS EVENING AHEAD OF WEAK SHORTWAVE TROUGH...WHERE
MODERATE TO MARGINAL INSTABILITY IS IN PLACE. SHEAR REMAINS QUITE
STRONG WITH SUFFICIENT SHEAR FOR BOTH SUPERCELLS AND BOWING
STRUCTURES...WITH PRIMARY THREATS OF LARGE HAIL AND DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 27025.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 320 SEVERE TSTM IN OH LE 012225Z - 020300Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
25ENE TOL/TOLEDO OH/ - 20SE DAY/DAYTON OH/
..AVIATION COORDS.. 55NM E/W /30S DXO - 36S ROD/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27025.
LAT...LON 41708208 39688273 39688518 41708461
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 320 Status Report Messages:
STATUS REPORT #3 ON WW 320
VALID 020210Z - 020340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ENE MIE
TO 25 N CMH TO 45 WNW CLE.
..SPC..06/02/09
ATTN...WFO...ILN...IWX...CLE...
&&
STATUS REPORT FOR WS 320
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC177-020340-
IN
. INDIANA COUNTIES INCLUDED ARE
WAYNE
$$
OHC005-021-023-037-041-043-049-057-077-083-089-097-109-113-117-
135-139-149-159-020340-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND CHAMPAIGN CLARK
DARKE DELAWARE ERIE
FRANKLIN GREENE HURON
KNOX LICKING MADISON
MIAMI MONTGOMERY MORROW
PREBLE RICHLAND SHELBY
UNION
$$
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.
$$
STATUS REPORT #2 ON WW 320
VALID 020120Z - 020240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE FWA
TO 5 WSW FDY TO 30 ENE TOL.
..SPC..06/02/09
ATTN...WFO...ILN...IWX...CLE...
&&
STATUS REPORT FOR WS 320
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC177-020240-
IN
. INDIANA COUNTIES INCLUDED ARE
WAYNE
$$
OHC003-005-011-021-023-033-037-041-043-049-057-063-065-077-083-
089-091-097-101-107-109-113-117-123-135-139-143-147-149-159-161-
175-020240-
OH
. OHIO COUNTIES INCLUDED ARE
ALLEN ASHLAND AUGLAIZE
CHAMPAIGN CLARK CRAWFORD
DARKE DELAWARE ERIE
FRANKLIN GREENE HANCOCK
HARDIN HURON KNOX
LICKING LOGAN MADISON
MARION MERCER MIAMI
MONTGOMERY MORROW OTTAWA
PREBLE RICHLAND SANDUSKY
SENECA SHELBY UNION
VAN WERT WYANDOT
$$
LEZ143-144-163-164-020240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
RENO BEACH TO THE ISLANDS OH
THE ISLANDS TO VERMILION OH
RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORE TO US/CANADIAN
BORDER
THE ISLANDS TO VERMILION OH BEYOND 5NM OFF SHORE TO US/CANADIAN
BORDER
$$
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.
$$
STATUS REPORT #1 ON WW 320
VALID 020000Z - 020140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NE FWA TO
20 SSW TOL TO 10 N TOL.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 912
..KIS..06/02/09
ATTN...WFO...ILN...IWX...CLE...
&&
STATUS REPORT FOR WS 320
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC177-020140-
IN
. INDIANA COUNTIES INCLUDED ARE
WAYNE
$$
OHC003-005-011-021-023-033-037-041-043-049-057-063-065-077-083-
089-091-095-097-101-107-109-113-117-123-125-135-137-139-143-147-
149-159-161-173-175-020140-
OH
. OHIO COUNTIES INCLUDED ARE
ALLEN ASHLAND AUGLAIZE
CHAMPAIGN CLARK CRAWFORD
DARKE DELAWARE ERIE
FRANKLIN GREENE HANCOCK
HARDIN HURON KNOX
LICKING LOGAN LUCAS
MADISON MARION MERCER
MIAMI MONTGOMERY MORROW
OTTAWA PAULDING PREBLE
PUTNAM RICHLAND SANDUSKY
SENECA SHELBY UNION
VAN WERT WOOD WYANDOT
$$
LEZ142-143-144-162-163-164-020140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MAUMEE BAY TO RENO BEACH OH
RENO BEACH TO THE ISLANDS OH
THE ISLANDS TO VERMILION OH
DETROIT RIVER LT. TO MAUMEE BAY OH TO RENO BEACH OH BEYOND 5NM
OFFSHORE TO US/CANADIAN BORDER
RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORE TO US/CANADIAN
BORDER
THE ISLANDS TO VERMILION OH BEYOND 5NM OFF SHORE TO US/CANADIAN
BORDER
$$
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.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
