September 2026

[NEG NAO]

5 hours ago, Brian5671 said:

backdoor front will be S and W of most of the area tomorrow-stable airmass in place

Agree for the morning and most of the Afternoon BUT there is a potential for the front to move back north as a warm front - timing is an issue right now - we have done quite well this summer regarding severe weather with warm fronts approaching from the south - time will tell..........

[weathermedic]

4 minutes ago, IrishRob17 said:

A meso discussion was issued in the last 15 minutes, watch looks likely by 5pm. I’m hoping it’s south of me. 

Mesoscale Discussion 2185
   NWS Storm Prediction Center Norman OK
   0213 PM CDT Tue Sep 01 2026

   Areas affected...portions of the Mid-Atlantic

   Concerning...Severe potential...Watch likely 

   Valid 011913Z - 012115Z

   Probability of Watch Issuance...80 percent

   SUMMARY...Thunderstorm development is anticipated within the next
   1-2 hours across portions of the Mid-Atlantic region. Given a
   favorable convective environment, storms will likely intensify and
   pose a severe wind/hail threat through early evening. Watch issuance
   is likely by 21z (5 PM EDT) as thunderstorms begin to mature.

   DISCUSSION...Latest GOES day cloud phase imagery depicts towering
   cumulus on the north/northeastern fringe of a low-level thermal
   ridge (roughly outlined by the 90 F isotherm) where modest warm
   advection is promoting ascent. Some lingering inhibition is noted in
   satellite imagery, but this should continue to erode over the next
   couple of hours as the diurnal heating maximum approaches. Latest
   guidance generally depicts deep convective initiation by 20-21 UTC
   within this regime and potentially along a diffuse frontal boundary
   draped from southern NY into northern PA.

   Regional VWPs continue to sample mid-level flow on the order of 35
   knots, which is supporting similar effective bulk shear values given
   somewhat weak near-surface winds. Based on these observations and
   recent forecast soundings, hodograph elongation appears sufficient
   for organized convection, including the potential for a few
   supercells. While discrete modes persist, large hail (potentially up
   to 1.75 inches) will be possible. A brief tornado may also be
   possible - particularly across northern NJ/far southern NY near a
   weak surface trough where low-level veering may be adequate for a
   localized tornado threat. 

   With time, clustering should promote some degree of upscale growth
   with an increasing severe wind threat, especially with southward
   extent into southern NJ and DE where guidance has been consistently
   showing a signal for clustered/linear storm modes. Given the
   favorable convective environment, watch issuance will likely be
   needed as convection begins to intensify.

[NJwx85]

80% chance.

[weathermedic]

Looks like a few storms beginning to pop on radar over Sussex County and near Allentown PA

[NEG NAO]

The movement of these storms if they develop is going to be mainly northwest to southeast. As of 3:35 radar is only showing some development just south of Allentown PA

[Stormlover74]

13 minutes ago, IrishRob17 said:

A meso discussion was issued in the last 15 minutes, watch looks likely by 5pm. I’m hoping it’s south of me. 

Ha I literally looked a minute before this

[IrishRob17]

6 minutes ago, Stormlover74 said:

Ha I literally looked a minute before this

Haha, I figured, it was close. I saw it on RadarScope first. 

[SnowGoose69]

27 minutes ago, IrishRob17 said:

A meso discussion was issued in the last 15 minutes, watch looks likely by 5pm. I’m hoping it’s south of me. 

Both the 18Z HRRR/RRFS expect massive convection over the area by 2030-2130Z.  That seems unlikely.  I do think areas south though in NJ may see extensive storms later

[winterwx21]

87 with a dewpoint of 73 here. Feels like a steambath out there. Hopefully we'll get an exciting t-storm a little later. 

[NEG NAO]

Severe Watch  Issued

BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 638
   NWS STORM PREDICTION CENTER NORMAN OK
   435 PM EDT TUE SEP 1 2026

   SEVERE THUNDERSTORM WATCH 638 IS IN EFFECT UNTIL 1200 AM EDT
   FOR THE FOLLOWING LOCATIONS

   DEC001-003-005-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

   DE 
   .    DELAWARE COUNTIES INCLUDED ARE

   KENT                 NEW CASTLE          SUSSEX              


   MDC011-015-025-029-035-041-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

   MD 
   .    MARYLAND COUNTIES INCLUDED ARE

   CAROLINE             CECIL               HARFORD             
   KENT                 QUEEN ANNE'S        TALBOT              


   NJC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
   031-033-035-037-039-041-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

   NJ 
   .    NEW JERSEY COUNTIES INCLUDED ARE

   ATLANTIC             BERGEN              BURLINGTON          
   CAMDEN               CAPE MAY            CUMBERLAND          
   ESSEX                GLOUCESTER          HUDSON              
   HUNTERDON            MERCER              MIDDLESEX           
   MONMOUTH             MORRIS              OCEAN               
   PASSAIC              SALEM               SOMERSET            
   SUSSEX               UNION               WARREN              


   NYC005-047-061-071-079-081-085-087-105-119-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

   NY 
   .    NEW YORK COUNTIES INCLUDED ARE

   BRONX                KINGS               NEW YORK (MANHATTAN)
   ORANGE               PUTNAM              QUEENS              
   RICHMOND             ROCKLAND            SULLIVAN            
   WESTCHESTER          


   PAC011-015-017-025-027-029-035-037-041-043-045-067-069-071-075-
   077-079-081-087-089-091-093-095-097-099-101-103-105-107-109-113-
   115-117-119-127-131-133-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

   PA 
   .    PENNSYLVANIA COUNTIES INCLUDED ARE

   BERKS                BRADFORD            BUCKS               
   CARBON               CENTRE              CHESTER             
   CLINTON              COLUMBIA            CUMBERLAND          
   DAUPHIN              DELAWARE            JUNIATA             
   LACKAWANNA           LANCASTER           LEBANON             
   LEHIGH               LUZERNE             LYCOMING            
   MIFFLIN              MONROE              MONTGOMERY          
   MONTOUR              NORTHAMPTON         NORTHUMBERLAND      
   PERRY                PHILADELPHIA        PIKE                
   POTTER               SCHUYLKILL          SNYDER              
   SULLIVAN             SUSQUEHANNA         TIOGA               
   UNION                WAYNE               WYOMING             
   YORK                 


   ANZ338-430-431-450-451-452-453-454-455-530-539-540-020400-
   /O.NEW.KWNS.SV.A.0638.260901T2035Z-260902T0400Z/

[LCPhotowerx]

sunny and warm in central S.I.

[Snowlover11]

Dont get the watch but ok.

[Picard]

Holy Dewpoints.
Heat Advisory territory, especially S-NJ.  Heat indexes are over 100.

[NEG NAO]

7 minutes ago, Picard said:

Holy Dewpoints.
Heat Advisory territory, especially S-NJ.  Heat indexes are over 100.

Mixed feelings about this severe watch since there is only 1 severe warning in PA so far and the heavy precip echoes coming out of eastern PA into NJ are shrinking

 

[Brian5671]

3 minutes ago, NEG NAO said:

Mixed feelings about this severe watch since there is only 1 severe watch in PA so far and the heavy precip echoes coming out of eastern PA into NJ are shrinking

 

they must think more develops later as it runs til midnight but yeah radar is not exciting to say the least

[LoboLeader1]

Currently 80F...DP 74/RH 89%. 

 

 

 

[Neblizzard]

17 minutes ago, NEG NAO said:

Mixed feelings about this severe watch since there is only 1 severe warning in PA so far and the heavy precip echoes coming out of eastern PA into NJ are shrinking

 

I think everything stays west of the Delaware .   Perhaps western portions of NJ will get some strong storms later this evening . 

[qg_omega]

lol

[LongBeachSurfFreak]

Double tornado warnings in Pa right now. Pretty stable on the island right now so not expecting much here other then a run of the mill thunderstorm


.

[NJwx85]

5000 J/KG of SBCAPE in PA