Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 493
NWS STORM PREDICTION CENTER NORMAN OK
710 PM EDT MON JUN 22 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN AND CENTRAL FLORIDA
EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 710 PM UNTIL
100 AM 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 60 MILES NORTH
NORTHWEST OF GAINESVILLE FLORIDA TO 35 MILES SOUTH SOUTHWEST OF
ORLANDO FLORIDA. 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 490...WW 491...WW 492...
DISCUSSION...CLUSTERS OF THUNDERSTORMS IN GA WILL SPREAD SWD INTO FL
ON NNWLY MID LEVEL STEERING FLOW...WITH THE STRONGEST STORMS FOCUSED
WHERE THE CLUSTERS INTERSECT THE STALLED E COAST SEA BREEZE.
MODERATE INSTABILITY AND HOT SURFACE TEMPERATURES/RELATIVELY DEEP
MIXED LAYERS WILL PROMOTE STRONG DOWNDRAFTS AND THE POTENTIAL FOR
DAMAGING WINDS THROUGH THE EARLY OVERNIGHT HOURS. THE MOST INTENSE
STORMS MAY ALSO PRODUCE ISOLATED LARGE HAIL.
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 550. MEAN STORM
MOTION VECTOR 34025.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 493 SEVERE TSTM FL 222310Z - 230500Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
60NNW GNV/GAINESVILLE FL/ - 35SSW ORL/ORLANDO FL/
..AVIATION COORDS.. 55NM E/W /57NNE CTY - 30SSW ORL/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 34025.
LAT...LON 30478155 28078048 28078262 30478375
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 493 Status Report Messages:
STATUS REPORT #4 ON WW 493
VALID 230430Z - 230500Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 W MLB TO
10 NE MLB.
WW 493 WILL BE ALLOWED TO EXPIRE AT 230500Z.
..DIAL..06/23/09
ATTN...WFO...JAX...MLB...TBW...TAE...
&&
STATUS REPORT FOR WS 493
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
FLC061-230500-
FL
. FLORIDA COUNTIES INCLUDED ARE
INDIAN RIVER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 493
VALID 230335Z - 230440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 N AGR TO
25 WNW ORL TO 35 SE DAB.
..DIAL..06/23/09
ATTN...WFO...JAX...MLB...TBW...TAE...
&&
STATUS REPORT FOR WS 493
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
FLC009-061-095-097-117-230440-
FL
. FLORIDA COUNTIES INCLUDED ARE
BREVARD INDIAN RIVER ORANGE
OSCEOLA SEMINOLE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 493
VALID 230245Z - 230340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S CTY TO
25 NE CTY TO 10 NNE GNV TO 20 SSW SGJ TO 20 SE SGJ.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1279
..DIAL..06/23/09
ATTN...WFO...JAX...MLB...TBW...TAE...
&&
STATUS REPORT FOR WS 493
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
FLC001-009-017-041-053-061-069-075-083-095-097-107-117-119-127-
230340-
FL
. FLORIDA COUNTIES INCLUDED ARE
ALACHUA BREVARD CITRUS
GILCHRIST HERNANDO INDIAN RIVER
LAKE LEVY MARION
ORANGE OSCEOLA PUTNAM
SEMINOLE SUMTER VOLUSIA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 493
VALID 230140Z - 230240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ESE VLD
TO 10 NNE GNV TO 25 SW SGJ TO 20 SSE SGJ.
..DIAL..06/23/09
ATTN...WFO...JAX...MLB...TBW...TAE...
&&
STATUS REPORT FOR WS 493
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
FLC001-009-017-023-029-035-041-047-053-061-067-069-075-079-083-
095-097-107-117-119-121-123-125-127-230240-
FL
. FLORIDA COUNTIES INCLUDED ARE
ALACHUA BREVARD CITRUS
COLUMBIA DIXIE FLAGLER
GILCHRIST HAMILTON HERNANDO
INDIAN RIVER LAFAYETTE LAKE
LEVY MADISON MARION
ORANGE OSCEOLA PUTNAM
SEMINOLE SUMTER SUWANNEE
TAYLOR UNION VOLUSIA
$$
AMZ454-230240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
AMZ454
$$
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 (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
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
|
Low (10%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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.