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cat $HOME/public_html/posts/storm-prediction-center-severe-thunderstorm-watch-652.txt >> story.html | parse_story story.html; rm -f storm-prediction-center-severe-thunderstorm-watch-652.txt story.html
Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 652
NWS Storm Prediction Center Norman OK
840 PM EDT Thu Sep 3 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
District Of Columbia
Delaware
Maryland
Southern New Jersey
Far Southeast Pennsylvania
Northern Virginia
Far Eastern West Virginia
Coastal Waters
* Effective this Thursday night and Friday morning from 840 PM
until 200 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Several clusters of strong to severe thunderstorms capable
of scattered damaging wind gusts will be possible this evening and
overnight.
The severe thunderstorm watch area is approximately along and 60
statute miles either side of a line from 30 miles west of
Martinsburg WV to 40 miles east of Salisbury MD. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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 647...WW 649...WW
650...WW 651...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 450. Mean storm motion vector
29030.
...Smith
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2 WW 652 SEVERE TSTM DC DE MD NJ PA VA WV CW 040040Z - 040600Z AXIS..60 STATUTE MILES EITHER SIDE OF LINE.. 30W MRB/MARTINSBURG WV/ - 40E SBY/SALISBURY MD/ ..AVIATION COORDS.. 50NM EITHER SIDE /55NW CSN - 36E SBY/ HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS. MAX TOPS TO 450. MEAN STORM MOTION VECTOR 29030. LAT...LON 40247825 39167448 37497504 38567883 THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS FOR WOU2.
Watch 652 Status Report Messages:
STATUS REPORT #1 ON WW 652 VALID 040135Z - 040240Z THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..CHALMERS..09/04/26 ATTN...WFO...LWX...PHI...AKQ... && STATUS REPORT FOR WS 652 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-003-005-040240- DE . DELAWARE COUNTIES INCLUDED ARE KENT NEW CASTLE SUSSEX $$ DCC001-040240- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA $$ MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-043-045-047-510-040240- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT CAROLINE CARROLL CECIL CHARLES DORCHESTER FREDERICK HARFORD HOWARD KENT MONTGOMERY PRINCE GEORGES QUEEN ANNE'S ST. MARYS SOMERSET TALBOT WASHINGTON WICOMICO WORCESTER MARYLAND INDEPENDENT CITIES INCLUDED ARE BALTIMORE CITY $$ NJC009-011-033-040240- NJ . NEW JERSEY COUNTIES INCLUDED ARE CAPE MAY CUMBERLAND SALEM $$ PAC029-040240- PA . PENNSYLVANIA COUNTIES INCLUDED ARE CHESTER $$ VAC013-043-047-059-061-069-099-107-113-133-139-153-157-159-171- 179-187-193-510-600-610-630-683-685-840-040240- VA . VIRGINIA COUNTIES INCLUDED ARE ARLINGTON CLARKE CULPEPER FAIRFAX FAUQUIER FREDERICK KING GEORGE LOUDOUN MADISON NORTHUMBERLAND PAGE PRINCE WILLIAM RAPPAHANNOCK RICHMOND SHENANDOAH STAFFORD WARREN WESTMORELAND VIRGINIA INDEPENDENT CITIES INCLUDED ARE ALEXANDRIA FAIRFAX FALLS CHURCH FREDERICKSBURG MANASSAS MANASSAS PARK WINCHESTER $$ WVC003-037-065-040240- WV . WEST VIRGINIA COUNTIES INCLUDED ARE BERKELEY JEFFERSON MORGAN $$ ANZ430-431-453-454-455-530-531-532-533-534-535-536-537-538-539- 540-541-542-543-650-040240- CW . ADJACENT COASTAL WATERS INCLUDED ARE DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER PATUXENT RIVER TO BROOMES ISLAND MD TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20 NM $$ 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 ( |
| Probability of 1 or more strong (EF2-EF5) tornadoes |
Low ( |
Wind
| Probability of 10 or more severe wind events |
Mod (40%) |
| Probability of 1 or more wind events > 65 knots |
Low (20%) |
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 |
Mod (60%) |
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.