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Potential thunderstorms/svr thunderstorms Thread


tombo82685

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Battle between the nam and the euro...euro brings the mcs from ttn south while nam is nyc north while gfs is about as clueless as lee when it comes to storms

For what its worth, the 12z Canadian shows something similar to the NAM. NAM/Canadian would still swing a line of showers and potential storms through during the day tomorrow, just the main focus would be further NE.

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SPC's Day 2 has the southern areas in the slight risk.

DAY 2 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1217 PM CDT TUE AUG 02 2011

VALID 031200Z - 041200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE MID ATLANTIC

REGION...

THE PRIMARY BAND OF WESTERLIES WILL REMAIN OVER THE NORTHERN TIER OF

STATES...INTO THE NORTHEAST AND MID ATLANTIC STATES ON WEDNESDAY.

BROAD UPPER RIDGING ACROSS MOST OF THE CENTRAL/SOUTHERN STATES WILL

LIMIT VERTICAL SHEAR AND PRECLUDE ORGANIZED SEVERE STORMS IN MOST

REGIONS. HOWEVER...WIDESPREAD MOIST AND UNSTABLE CONDITIONS MAY

RESULT IN SCATTERED THUNDERSTORMS ACROSS MUCH OF THE NATION.

...MID ATLANTIC REGION...

A RATHER STRONG SHORTWAVE TROUGH NOW OVER THE DAKOTAS WILL TRACK

ACROSS THE GREAT LAKES AND INTO THE MID ATLANTIC STATES ON

WEDNESDAY. SEVERAL CLUSTERS OF THUNDERSTORMS ARE ONGOING TODAY WITH

THIS FEATURE...AND WILL LIKELY PERSIST INTO TOMORROW. MODEL

GUIDANCE SUGGESTS THESE CONVECTIVE CLUSTERS WILL BE OVER PARTS OF

LOWER MI/NY/PA/OH AT 12Z. THERE IS CONSIDERABLE UNCERTAINTY

REGARDING THE EXTENT OF CLOUD COVER AHEAD OF THE STORMS...WHICH WILL

IMPACT THE DEGREE OF AFTERNOON DESTABILIZATION OVER THE MID ATLANTIC

REGION. HOWEVER...RATHER STRONG LOW AND MID LEVEL WIND FIELDS

ASSOCIATED WITH THE UPPER TROUGH POSE SUFFICIENT CONCERN TO INCLUDE

THIS REGION IN A SLIGHT RISK FOR SEVERE STORMS. THE MOST LIKELY

THREAT WOULD BE AN ORGANIZED MCS TRACKING THROUGH THE AREA DURING

THE AFTERNOON PRODUCING LOCALLY DAMAGING WIND GUSTS.

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post-105-0-47954400-1312324060.gif

Considering radar has thunderstorms already in Western PA and the NAM doesn't have anything near the region... Don't be surprised if we're getting storms into the western burbs by 3 AM tonight.

post-105-0-52429400-1312324108.gif

The only thing the NAM got right was the main MCV...the out ahead energy is a complete swing/miss.

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okay guys whats it going to do tomorrow. What are the best bets Want to see if we can get a full day of cutting in. If the Euro is right then Im golden and good to go. This feels like watching the models for a snow event. How likely is a bust tomorrow in NJ?

who knows, you will just have to wake up tomorrow and see what the radar looks like...the models are everywhere honestly. Nam is north euro is south, gfs is south of you, ggem is with the nam and ukie is with the nam.

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post-105-0-47954400-1312324060.gif

Considering radar has thunderstorms already in Western PA and the NAM doesn't have anything near the region... Don't be surprised if we're getting storms into the western burbs by 3 AM tonight.

post-105-0-52429400-1312324108.gif

The only thing the NAM got right was the main MCV...the out ahead energy is a complete swing/miss.

Looks as if the precip is diving towards western MD and breaking up... RUC has nothing making it for the next 12 hours. Waiting game..

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MOS back up into the 80's today lol

http://www.nws.noaa....all.pl?sta=KPHL

My spot forecast high has gone up steadily in the last couple days. Went from 77, to now 87 for today.

Today: Showers and thunderstorms likely, mainly after 2pm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 87. Calm wind becoming south between 6 and 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

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Anybody know how to pull up archive radar? I was down at my in-laws last night on the eastern shore of the Chesapeake across from Havre de Grace and we got pummeled by a nice storm at 1 am with a ton of heavy winds. Would love to see what it looked like on radar.

DE and Central PA got some thunderstorms overnight. ;)

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Boy, radar has really fallen off a cliff during the morning. What looked like some promising precip has fallen apart as the MCS moves southeastward. I went looking for some explanation and found this off the Balt./D.C. AFD:

COMPLEX SFC PATTERN TODAY...WITH MAJOR FCST DIAGNOSTICSCANCELLING EACH OTHER OUT IN MOST OF THE CWA INHIBITING A HIGHCONFIDENCE FCST. STRONG LLVL DIVERGENCE BLO H85 IS DIMINISHING PCPNACROSS THE REGION THIS MORNING...BUT THE LLVL DIVERGENCE IS FCST TODECREASE THIS AFTERNOON TO AID UPWARD MOTION. ON THE FLIPSIDE...WAA WILL OCCUR THIS AFT IN THE MID LEVELS...WHICH WILLDIMINISH INSTABILITY. AMPLE DEEP MOISTURE WITH PW/S JUST BLO 2INCHES.MODIFIED 12Z KIAD SOUNDING MODIFIED TO MAX TEMP OF 86/68 PROVIDESABOUT 500 J/KG MLCAPE AND ONLY 200 J/KG SCAPE THIS AFTERNOON...ANDTHIS IS A HIGH ESTIMATE. IT IS ALSO NOTED THAT BOTH THE GFS ANDNAM MODELS HAVE LITTLE OR NO MODEL SFC CAPE ACROSS OUR CWATODAY...XCPT THE NAM WHICH HAS A POCKET OF MODERATE SCAPE IN THECENTRAL SHEN VALLEY. HOWEVER...MODEL 0-1KM HELICITIES INCREASE TO250 M2/S2 BETWEEN 18Z & 00Z. SO WE ARE IN A LOW CAPE/HIGH SHEARENVIRONMENT...WITH THE BEST CHANCE OF CONVECTION IN OUR SW CWAINCLUDING CHO
.So hopefully this afternoon we'll see factors working towards a build-up of precip again and we can squeeze a few tenths out of this event.
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good thing this wasn't a snowstorm potential.

anyway.......we'll see what happens, but the radar blossoming over central NY state seems to be aimed NYC/New England.

if it was then adam would be busy deleting posts, warning folks, giving timeouts and banning people .... oh the fun times to come ;):snowman:

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Yup, and after the last 2 winters, if we only have a "normal" snowfall season, its gonna get ugly around here.

Hopefully, having both a banter thread and a serious discussion thread that is well moderated will keep the ugliness to a minimum. I also hope that people can be mature about it and realize that we are not going to have historic winters every year, but that's probably not going to happen...

I made one or two 'off color' posts in the overnight hours of the Boxing Day Storm and still have my warning bar halfway filled in, so I hope that hardcore approach continues to be taken this season...

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I also hope that people can be mature

laugh.gifaxesmiley.pngbanned.gif

ok but since this is the thunderstorm thread i better say something more than emoticons.

The 14z HRRR has an area of heavy showers/light t-storms moving NE through central PA around 22z-00z, but definitely no MCS, lol

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ICDS Isolated debris cloud showers- please add this term tour discussion. I am so tired of seeing the great lakes MCS turn into debris cloud fields yielding jack crap in the precip dept. The high predicted yesterday for today was 72 with showers and heavy t-storms this morning. Woke up to sunshine and the mid 80's. This ugly pattern has to break soon. The landscaping business has to be hurting. Can.t mow, cannot plant because of heat and lack of precip. Just my thoughts while I wait for that .01 precip to fallaxesmiley.pngtongue.gif

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ICDS Isolated debris cloud showers- please add this term tour discussion. I am so tired of seeing the great lakes MCS turn into debris cloud fields yielding jack crap in the precip dept. The high predicted yesterday for today was 72 with showers and heavy t-storms this morning. Woke up to sunshine and the mid 80's. This ugly pattern has to break soon. The landscaping business has to be hurting. Can.t mow, cannot plant because of heat and lack of precip. Just my thoughts while I wait for that .01 precip to fallaxesmiley.pngtongue.gif

I mowed my lawn lastnight the grass isn't growing but the clover and weeds have taken off due to the nearly 4 inches of rain in the past 3 weeks.

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