Source: US National Oceanic and Atmospheric Administration
Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.Note: Click for Watch Status Reports.
SEL9
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 529
NWS Storm Prediction Center Norman OK
420 PM EDT Tue Jul 28 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
District Of Columbia
Delaware
Eastern Maryland
Southern New Jersey
Southeast Pennsylvania
Northeast Virginia
Coastal Waters
* Effective this Tuesday afternoon and evening from 420 PM until
1000 PM EDT.
* Primary threats include…
A few tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY…Thunderstorms tracking eastward across southeast
Pennsylvania and northern Virginia will move through the watch area
this afternoon. Damaging winds remain the primary threat. However,
supercell storms may result in a few tornadoes.
The tornado watch area is approximately along and 65 statute miles
east and west of a line from 10 miles south of Patuxent River MD to
25 miles north northeast of Philadelphia PA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 525…WW 526…WW
527…WW 528…
AVIATION…Tornadoes and 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 27030.
…Hart
SEL9
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 529
NWS Storm Prediction Center Norman OK
420 PM EDT Tue Jul 28 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
District Of Columbia
Delaware
Eastern Maryland
Southern New Jersey
Southeast Pennsylvania
Northeast Virginia
Coastal Waters
* Effective this Tuesday afternoon and evening from 420 PM until
1000 PM EDT.
* Primary threats include…
A few tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY…Thunderstorms tracking eastward across southeast
Pennsylvania and northern Virginia will move through the watch area
this afternoon. Damaging winds remain the primary threat. However,
supercell storms may result in a few tornadoes.
The tornado watch area is approximately along and 65 statute miles
east and west of a line from 10 miles south of Patuxent River MD to
25 miles north northeast of Philadelphia PA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 525…WW 526…WW
527…WW 528…
AVIATION…Tornadoes and 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 27030.
…Hart
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW9
WW 529 TORNADO DC DE MD NJ PA VA CW 282020Z – 290200Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
10S NHK/PATUXENT RIVER MD/ – 25NNE PHL/PHILADELPHIA PA/
..AVIATION COORDS.. 55NM E/W /44WSW SBY – 36SE ETX/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT…LON 38137762 40187630 40187383 38137522
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 529 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
Mod (50%)
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (10%)
Wind
Probability of 10 or more severe wind events
Mod (60%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Low (20%)
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 (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% (EF2-EF5 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.