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Enhanced Bulleted Format of Public Watch Notification Messages (SEL)
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Service Change Notice (SCN): http://www.nws.noaa.gov/om/notification/scn13-10sel_enhanced_haz.htm
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Tornado Watch Example
WWUS20 KWNS 101216
SEL2
SPC WW 101216
LAZ000-MSZ000-CWZ000-102000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 2
NWS STORM PREDICTION CENTER NORMAN OK
615 AM CST THU JAN 10 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 615 AM UNTIL
200 PM CST.
TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTHWEST OF PINE
BELT MISSISSIPPI TO 45 MILES SOUTH OF HOUMA LOUISIANA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 1...
DISCUSSION...SSW-NNE LA SQLN EXPECTED TO CONTINUE MOVING GENERALLY
ENEWD /WITH FORWARD PROPAGATION FOSTERED BY ESELY LOW-LVL
FLOW/...WHILE DEVELOPING NNEWD...AS LOW WAA/MOISTURE TRANSPORT
CONTINUE TO ITS EAST. GRAZING INFLUENCE OF HEIGHT FALLS/UPR
DIFLUENCE ASSOCIATED NEWD EJECTION OF TX UPR VORT ALSO MAY ASSIST
CONVECTIVE SYSTEM STRENGTH/DURATION. CHARACTER OF LOW-LVL HODOGRAPHS
AND AVAILABILITY OF SEASONABLY RICH LOW-LVL MOISTURE SUGGEST
CONTINUED RISK FOR EMBEDDED LEWPS/CIRCULATIONS...SOME POSSIBLY WITH
DMGG WIND AND TORNADOES /SEE MCD 6/.
AVIATION...TORNADOES AND 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 22035.
...CORFIDI
WWUS20 KWNS 101216
SEL2
^^SPC WW 101216
LAZ000-MSZ000-CWZ000-102000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 2
NWS STORM PREDICTION CENTER NORMAN OK
615 AM CST THU JAN 10 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS
* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 615 AM UNTIL
200 PM CST.
* PRIMARY THREATS INCLUDE...
SEVERAL TORNADOES POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTHWEST OF PINE
BELT MISSISSIPPI TO 45 MILES SOUTH OF HOUMA LOUISIANA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 1...
DISCUSSION...SSW-NNE LA SQLN EXPECTED TO CONTINUE MOVING
GENERALLY ENEWD /WITH FORWARD PROPAGATION FOSTERED BY ESELY
LOW-LVL FLOW/...WHILE DEVELOPING NNEWD...AS LOW WAA/MOISTURE
TRANSPORT CONTINUE TO ITS EAST. GRAZING INFLUENCE OF HEIGHT
FALLS/UPR DIFLUENCE ASSOCIATED NEWD EJECTION OF TX UPR VORT ALSO
MAY ASSIST CONVECTIVE SYSTEM STRENGTH/DURATION. CHARACTER OF
LOW-LVL HODOGRAPHS AND AVAILABILITY OF SEASONABLY RICH LOW-LVL
MOISTURE SUGGEST CONTINUED RISK FOR EMBEDDED
LEWPS/CIRCULATIONS...SOME POSSIBLY WITH DMGG WIND AND TORNADOES
/SEE MCD 6/.
AVIATION...TORNADOES AND 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 22035.
...CORFIDI
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PDS Tornado Watch Example
WWUS20 KWNS 271605
SEL2
SPC WW 271605
ARZ000-LAZ000-MSZ000-280000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 232
NWS STORM PREDICTION CENTER NORMAN OK
1105 AM CDT WED APR 27 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME SOUTHEAST ARKANSAS
NORTHEAST LOUISIANA
MUCH OF MISSISSIPPI
EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1105 AM UNTIL
700 PM CDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES EAST SOUTHEAST OF
NATCHEZ MISSISSIPPI TO 50 MILES NORTH OF TUPELO MISSISSIPPI. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 229...WW 230...WW 231...
DISCUSSION...A VERY VOLATILE SETUP IS DEVELOPING FOR PORTIONS OF MS
LATER TODAY AS A MOIST AND VERY UNSTABLE AIR MASS RETURNS INTO AN
AREA WITH IMPRESSIVE LOW LEVEL AND DEEP LAYER VERTICAL SHEAR
PROFILES. ACTIVITY IS CURRENTLY DEVELOPING OVER SOUTHEAST
AR/NORTHEAST LA. HOWEVER...IT APPEARS THE PRIMARY CONCERN WILL
START BY EARLY AFTERNOON OVER CENTRAL/NORTHERN MS WHERE DISCRETE
TORNADIC SUPERCELLS ARE LIKELY. ALL PARAMETERS SUGGEST THAT
STRONG/VIOLENT AND LONG-TRACK TORNADOES ARE POSSIBLE. VERY LARGE
HAIL AND WIDESPREAD DAMAGING WINDS ARE ALSO A CONCERN.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 25040.
...HART
WWUS20 KWNS 271605
SEL2
^^SPC WW 271605
ARZ000-LAZ000-MSZ000-280000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 232
NWS STORM PREDICTION CENTER NORMAN OK
1105 AM CDT WED APR 27 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF...
EXTREME SOUTHEAST ARKANSAS
NORTHEAST LOUISIANA
MUCH OF MISSISSIPPI
* EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1105 AM UNTIL
700 PM CDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
* PRIMARY THREATS INCLUDE...
NUMEROUS INTENSE TORNADOES LIKELY
NUMEROUS SIGNFICANT DAMAGING WIND GUSTS TO 80 MPH LIKELY
NUMEROUS VERY LARGE HAIL EVENTS TO 4 INCHES IN DIAMETER LIKELY
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES EAST SOUTHEAST OF
NATCHEZ MISSISSIPPI TO 50 MILES NORTH OF TUPELO MISSISSIPPI. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 229...WW 230...WW 231...
DISCUSSION...A VERY VOLATILE SETUP IS DEVELOPING FOR PORTIONS OF
MS LATER TODAY AS A MOIST AND VERY UNSTABLE AIR MASS RETURNS INTO
AN AREA WITH IMPRESSIVE LOW LEVEL AND DEEP LAYER VERTICAL SHEAR
PROFILES. ACTIVITY IS CURRENTLY DEVELOPING OVER SOUTHEAST
AR/NORTHEAST LA. HOWEVER...IT APPEARS THE PRIMARY CONCERN WILL
START BY EARLY AFTERNOON OVER CENTRAL/NORTHERN MS WHERE DISCRETE
TORNADIC SUPERCELLS ARE LIKELY. ALL PARAMETERS SUGGEST THAT
STRONG/VIOLENT AND LONG-TRACK TORNADOES ARE POSSIBLE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 25040.
...HART
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Severe Thunderstorm Watch Example 1
WWUS20 KWNS 030401
SEL3
SPC WW 030401
OKZ000-030900-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 343
NWS STORM PREDICTION CENTER NORMAN OK
1100 PM CDT SAT JUN 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN AND NORTHERN OKLAHOMA
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1100 PM
UNTIL 400 AM CDT.
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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF ALVA
OKLAHOMA TO 20 MILES EAST SOUTHEAST OF CLINTON OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).
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 341...WW 342...
DISCUSSION...TSTM COMPLEX IN THE NE TX PANHANDLE APPEARS TO BE
GAINING ORGANIZATION/STRENGTH...AND POSSIBLY DEVELOPING AN MCV.
THESE OBSERVATIONS...COUPLED WITH INCREASING MOIST/STRONG SSELY LOW
LVL FLOW PER VWP DATA...AND WEAK UPR IMPULSE IN MODERATE WNWLY MID
LVL FLOW...TOGETHER SUGGEST THE RISK FOR ISOLD DMGG WINDS AND
PERHAPS SVR HAIL AS THE CONVECTIVE SYSTEM CONTINUES MAINLY E TO ESE
THROUGH EARLY SUN.
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 28025.
...CORFIDI
WWUS20 KWNS 030401
SEL3
^^SPC WW 030401
OKZ000-030900-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 343
NWS STORM PREDICTION CENTER NORMAN OK
1100 PM CDT SAT JUN 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN AND NORTHERN OKLAHOMA
* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1100 PM
UNTIL 400 AM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF ALVA
OKLAHOMA TO 20 MILES EAST SOUTHEAST OF CLINTON OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).
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 341...WW 342...
DISCUSSION...TSTM COMPLEX IN THE NE TX PANHANDLE APPEARS TO BE
GAINING ORGANIZATION/STRENGTH...AND POSSIBLY DEVELOPING AN MCV.
THESE OBSERVATIONS...COUPLED WITH INCREASING MOIST/STRONG SSELY
LOW LVL FLOW PER VWP DATA...AND WEAK UPR IMPULSE IN MODERATE
WNWLY MID LVL FLOW...TOGETHER SUGGEST THE RISK FOR ISOLD DMGG
WINDS AND PERHAPS SVR HAIL AS THE CONVECTIVE SYSTEM CONTINUES
MAINLY E TO ESE THROUGH EARLY SUN.
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 28025.
...CORFIDI
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Severe Thunderstorm Watch Example 2
WWUS20 KWNS 291903
SEL6
SPC WW 291903
INZ000-KYZ000-OHZ000-WVZ000-300200-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 436
NWS STORM PREDICTION CENTER NORMAN OK
305 PM EDT FRI JUN 29 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME SOUTHEAST INDIANA
EXTREME NORTHERN KENTUCKY
MOST OF CENTRAL AND SOUTHERN OHIO
CENTRAL AND NORTHWEST WEST VIRGINIA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1000 PM EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST
NORTHWEST OF DAYTON OHIO TO 45 MILES EAST OF PARKERSBURG WEST
VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
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 435...
DISCUSSION...A DEVELOPING MCS/BOW ECHO ACROSS INDIANA IS EXPECTED TO
MOVE ESEWD THROUGH THE AFTERNOON/EVENING AT ROUGHLY 50 KT. THE
STORM ENVIRONMENT DOWNSTREAM FEATURES STRONG INSTABILITY AND
SUFFICIENT DEEP-LAYER FLOW/SHEAR TO MAINTAIN AN ORGANIZED MCS...AND
THERE WILL BE THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS /SOME
SIGNIFICANT/ WITH THIS BOWING SYSTEM THROUGH THIS EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 650. MEAN STORM
MOTION VECTOR 29050.
...THOMPSON
WWUS20 KWNS 291903
SEL6
^^SPC WW 291903
INZ000-KYZ000-OHZ000-WVZ000-300200-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 436
NWS STORM PREDICTION CENTER NORMAN OK
305 PM EDT FRI JUN 29 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME SOUTHEAST INDIANA
EXTREME NORTHERN KENTUCKY
MOST OF CENTRAL AND SOUTHERN OHIO
CENTRAL AND NORTHWEST WEST VIRGINIA
* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1000 PM EDT.
* PRIMARY THREATS INCLUDE...
NUMEROUS DAMAGING WIND GUSTS EXPECTED WITH SEVERAL SIGNIFICANT
GUSTS TO 80 MPH LIKELY
SEVERAL VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER
POSSIBLE
A FEW TORNADOES POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST
NORTHWEST OF DAYTON OHIO TO 45 MILES EAST OF PARKERSBURG WEST
VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
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 435...
DISCUSSION...A DEVELOPING MCS/BOW ECHO ACROSS INDIANA IS EXPECTED
TO MOVE ESEWD THROUGH THE AFTERNOON/EVENING AT ROUGHLY 50 KT. THE
STORM ENVIRONMENT DOWNSTREAM FEATURES STRONG INSTABILITY AND
SUFFICIENT DEEP-LAYER FLOW/SHEAR TO MAINTAIN AN ORGANIZED
MCS...AND THERE WILL BE THE POTENTIAL FOR WIDESPREAD DAMAGING
WINDS /SOME SIGNIFICANT/ WITH THIS BOWING SYSTEM THROUGH THIS
EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 650. MEAN STORM
MOTION VECTOR 29050.
...THOMPSON
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