Ellinwood Posted June 24, 2012 Share Posted June 24, 2012 Loud thunder in Gaithersburg/North Potomac from that cell that just popped up: Left reflectivity, right echo tops. Link to comment Share on other sites More sharing options...
Kmlwx Posted June 24, 2012 Share Posted June 24, 2012 Loud thunder in Gaithersburg/North Potomac from that cell that just popped up: Left reflectivity, right echo tops. Some decent returns on it. Link to comment Share on other sites More sharing options...
Ian Posted June 24, 2012 Author Share Posted June 24, 2012 I heard thunder Link to comment Share on other sites More sharing options...
H2O Posted June 24, 2012 Share Posted June 24, 2012 dry here Link to comment Share on other sites More sharing options...
snowfan Posted June 25, 2012 Share Posted June 25, 2012 2 inches from that cell along 50.......barely moving. Link to comment Share on other sites More sharing options...
Avdave Posted June 25, 2012 Share Posted June 25, 2012 Loud thunder in Gaithersburg/North Potomac from that cell that just popped up: Left reflectivity, right echo tops. alert Link to comment Share on other sites More sharing options...
Ellinwood Posted June 25, 2012 Share Posted June 25, 2012 alert heh... just posted it because of how pathetic it looked vs. the lightning+thunder it was producing Just another garden variety storm. Link to comment Share on other sites More sharing options...
Avdave Posted June 25, 2012 Share Posted June 25, 2012 heh... just posted it because of how pathetic it looked vs. the lightning+thunder it was producing Just another garden variety storm. allright, we can let it slide this time have a great evening Mark Link to comment Share on other sites More sharing options...
MDstorm Posted June 25, 2012 Share Posted June 25, 2012 Slow moving thunderstorm in Western Howard County at this time. Heavy downpours and a few very loud claps of thunder. MDstorm Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 looks like we're getting screwed over tomorrow on timing.. tho it's been consistently like that except a run or two. Link to comment Share on other sites More sharing options...
yoda Posted June 25, 2012 Share Posted June 25, 2012 http://www.erh.noaa.gov/er/lwx/events/svrwx_20120622/ ...DOWNBURSTS CONFIRMED IN BLADENSBURG AND JOHNSVILLE MARYLAND...THE NATIONAL WEATHER SERVICE OFFICE IN STERLING VIRGINIA HAS CONFIRMED THAT DAMAGE IN TWO MARYLAND LOCALES FROM THUNDERSTORMS ON FRIDAY AFTERNOON AND EVENING 22 JUNE 2012 WAS THE RESULT OF DOWNBURST WINDS. IN JOHNSVILLE MARYLAND...THE ROOF OF A DAIRY BARN WAS DESTROYED AND BLOWN DOWNWIND FOR SEVERAL HUNDRED FEET. NUMEROUS TREES WERE UPROOTED AND LARGE LIMBS WERE SNAPPED. WIND IN THIS DOWNBURST WAS ESTIMATED AT AROUND 80 MPH. IN BLADENSBURG MARYLAND...EXTENSIVE DAMAGE OCCURRED TO BUILDINGS AND TREES. ALONG NEWTON STREET...ROOF DAMAGE WAS SUSTAINED AT AN APARTMENT BUILDING. PIECES OF THE ROOF WERE BLOWN DOWNWIND AND DAMAGED VEHICLES. ADDITIONAL HOMES IN THE AREA SUFFERED ROOF UPLIFT. NUMEROUS TREES WERE UPROOTED...AND MANY LARGE LIMBS WERE SNAPPED. POWER POLES ALSO WERE OBSERVED TO BE LEANING. WIND IN THIS DOWNBURST WAS ESTIMATED TO BE 90 TO 100 MPH. Link to comment Share on other sites More sharing options...
yoda Posted June 25, 2012 Share Posted June 25, 2012 Nighttime storms are fun.... storms popping up from Page to Prince William in a W/E lline Link to comment Share on other sites More sharing options...
yoda Posted June 25, 2012 Share Posted June 25, 2012 BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1206 AM EDT MON JUN 25 2012 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN RAPPAHANNOCK COUNTY IN NORTHWEST VIRGINIA... NORTHERN MADISON COUNTY IN NORTHWEST VIRGINIA... CENTRAL PAGE COUNTY IN NORTHWEST VIRGINIA... * UNTIL 1245 AM EDT Link to comment Share on other sites More sharing options...
yoda Posted June 25, 2012 Share Posted June 25, 2012 I hear thunder and see some CG lightning strikes looks like in the distance to my west... looks like I-66 is the developing ground 0300 SPC Meso has 2000 SBCAPE with 1000 MLCAPE in N VA... where the storms are developing. Li's still -6 to -7 and 6.5 C/KM ML Lapse rates will also help do the trick Link to comment Share on other sites More sharing options...
Ellinwood Posted June 25, 2012 Share Posted June 25, 2012 South of DC could see some nice winds today. Tornado threat has been rather meh from the get-go, but I'm still leaving a small chance of chasing open for southeast VA. Could be some spin-ups along the coastline in VA both near Hampton Roads and in southern Delmarva thanks to some enhanced low-level directional shear from the seabreeze. Link to comment Share on other sites More sharing options...
Ellinwood Posted June 25, 2012 Share Posted June 25, 2012 The mid-morning SPC schtuff: http://www.spc.noaa.gov/products/outlook/archive/2012/day1otlk_20120625_1300.html ...NORTHEAST TO MID ATLANTIC... PRONOUNCED DEEP-LAYER ASCENT ACCOMPANYING A DIGGING SHORT WAVE TROUGH AND ASSOCIATED COLD FRONT WILL ACT ON A MOIST AND INCREASINGLY UNSTABLE AIRMASS TO SUPPORT STRONG TO SEVERE STORMS WITH WIND AND HAIL FROM SRN NEW ENGLAND SOUTH TO THE CAROLINAS TODAY. SOME OF THIS ACTIVITY WAS ALREADY UNDERWAY THIS MORNING WITH A MESOLOW AND BOWING LINE SEGMENT EVIDENT ACROSS NRN CT...AND ANOTHER LINE SEGMENT ACROSS NJ. CYCLONIC MID LEVEL FLOW IS FORECAST TO STRENGTHEN TO BETWEEN 30-50KT COINCIDENT WITH GREATER DESTABILIZATION FROM NJ SOUTH TO NC AND SUPPORT ADDITIONAL FAST-MOVING LINE SEGMENTS WITH A CHANCE FOR DAMAGING WINDS AS THE FRONT SURGES THROUGH THE TIDEWATER OF VA BY EVENING. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 So close Link to comment Share on other sites More sharing options...
Ellinwood Posted June 25, 2012 Share Posted June 25, 2012 Not a bad forecast sounding for southern Delmarva this afternoon. Speed shear is a little weak from 900mb-600mb and the lapse rates suck from 600mb-500mb, but other than that a fairly solid sounding. EDIT: FWIW, the RAP is a lot less exciting wrt tornado potential... keeps winds fairly unidirectional in the low-levels. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 6 hr difference and this is a widespread event Link to comment Share on other sites More sharing options...
Kmlwx Posted June 25, 2012 Share Posted June 25, 2012 6 hr difference and this is a widespread event Let's setup giant fans to keep the front to the west until then. Link to comment Share on other sites More sharing options...
mattie g Posted June 25, 2012 Share Posted June 25, 2012 I hear thunder and see some CG lightning strikes looks like in the distance to my west... looks like I-66 is the developing ground 0300 SPC Meso has 2000 SBCAPE with 1000 MLCAPE in N VA... where the storms are developing. Li's still -6 to -7 and 6.5 C/KM ML Lapse rates will also help do the trick The dog woke me up with his barking at that thunder last night. I got a little excited when I saw the flashes going along with it, then I looked at the radar only to see that it would miss just to the south. We could really use the rain - we've missed out on pretty much everything since the early-June downpours. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 Let's setup giant fans to keep the front to the west until then. I brought my camera just in case. It could be close. I expect svr storms 1 mile east. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 MESOSCALE DISCUSSION 1270 NWS STORM PREDICTION CENTER NORMAN OK 0944 AM CDT MON JUN 25 2012 AREAS AFFECTED...DELMARVA INTO SERN VA CONCERNING...SEVERE THUNDERSTORM WATCH 425... VALID 251444Z - 251545Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 425 CONTINUES. SUMMARY...SEVERE THREAT WILL GRADUALLY SHIFT SWD ACROSS THE DELMARVA INTO THE EARLY AFTERNOON HOURS. DISCUSSION...STRONG HEATING IS WELL UNDERWAY ACROSS THE DELMARVA INTO SRN VA. LATEST DIAGNOSTIC DATA SUPPORTS THIS WITH SFC-3KM LAPSE RATES NOW APPROACHING 8 C/KM SOUTH OF THE WIND SHIFT. AS AIR MASS CONTINUES TO DESTABILIZE IT APPEARS CU FIELD WILL GRADUALLY DEEPEN NEAR/EAST OF PRE-FRONTAL WIND SHIFT SUCH THAT DEEP CONVECTION SHOULD DEVELOP ACROSS THIS REGION AS SFC TEMPERATURES WARM INTO THE MID-UPPER 80S. ENHANCED LOW LEVEL CONVERGENCE ALONG THE PRE-FRONTAL BOUNDARY AND SAGGING COLD FRONT SHOULD SERVE TO FOCUS THIS ACTIVITY. DAMAGING WINDS ARE THE GREATEST SEVERE THREAT WITH THIS CONVECTION AND WILL CONTINUE TO MONITOR THIS REGION. Link to comment Share on other sites More sharing options...
Scuddz Posted June 25, 2012 Share Posted June 25, 2012 Yay for being east of DC! Link to comment Share on other sites More sharing options...
Kmlwx Posted June 25, 2012 Share Posted June 25, 2012 That's a bit of an odd discussion format from SPC - they act like 425 is in effect for the area highlighted. Just a little strange. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 the gfs has hints of something friday tho not sure it's believable yet Link to comment Share on other sites More sharing options...
Kmlwx Posted June 25, 2012 Share Posted June 25, 2012 the gfs has hints of something friday tho not sure it's believable yet Excessive heat is more believable than legit storms. Link to comment Share on other sites More sharing options...
Ian Posted June 25, 2012 Author Share Posted June 25, 2012 Excessive heat is more believable than legit storms. yeah tho there is a decent mid-lvl flow and a short wave on the gfs. i'd guess verbatim we're pretty capped (havent looked past 500 maps). but the gfs does break out some stuff late. Link to comment Share on other sites More sharing options...
Scuddz Posted June 25, 2012 Share Posted June 25, 2012 Sprinkles! Link to comment Share on other sites More sharing options...
Riptide Posted June 25, 2012 Share Posted June 25, 2012 A decent hail core just moved over my location, was quite surprised. Other than that, just alot of CG lightning and torrential rain. Link to comment Share on other sites More sharing options...
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