ThePhotoGuy Posted April 20, 2013 Share Posted April 20, 2013 Multiple trees into homes in Arnold. Link to comment Share on other sites More sharing options...
mappy Posted April 20, 2013 Share Posted April 20, 2013 Absolutely pouring here. My patio is flooded Link to comment Share on other sites More sharing options...
Ian Posted April 20, 2013 Share Posted April 20, 2013 Pretty lame in Gaithersburg... was hoping for/expecting a little better. Oh well... one day closer to the Plains trip.28 days!!! Link to comment Share on other sites More sharing options...
smokeybandit Posted April 20, 2013 Share Posted April 20, 2013 Multiple trees into homes in Arnold. I've got a dead tree in my back yard that I'm shocked didn't blow over during that cell Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted April 20, 2013 Share Posted April 20, 2013 Multiple trees into homes in Arnold. At least 1 structure on fire in the area possibly another also. Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted April 20, 2013 Share Posted April 20, 2013 Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why. Link to comment Share on other sites More sharing options...
wxmeddler Posted April 20, 2013 Share Posted April 20, 2013 Most Severe I saw.. in the LSR's: 000NWUS51 KLWX 192333LSRLWXPRELIMINARY LOCAL STORM REPORTNATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC733 PM EDT FRI APR 19 2013..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON.....DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE......REMARKS..0712 PM TSTM WND GST 2 ENE ST. CHARLES 38.61N 76.89W04/19/2013 M70 MPH CHARLES MD MESONETMESONET OBSERVATION &&EVENT NUMBER LWX1300079$SMZ Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted April 20, 2013 Share Posted April 20, 2013 Most Severe I saw.. in the LSR's: Should have been back home towards Arnold way Link to comment Share on other sites More sharing options...
wxmeddler Posted April 20, 2013 Share Posted April 20, 2013 Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why. My hunch is that the wind drives up the rivers (Severn and Magothy) with the decreased friction and creates a microscale backed wind field. This increases the helicity in the lowest levels and you end up with brief spin-ups. I've often observed on my weather station at home that my winds are from the center of the river (120°) when the synoptic wind field is between 200° and 170°. Link to comment Share on other sites More sharing options...
Subtropics Posted April 20, 2013 Share Posted April 20, 2013 Storm was an overproducer IMBY. Stop sign shaking violently made it look like I was watching a hurricane video on youtube. I would say gusted easily to 50 eyeballing' it. Link to comment Share on other sites More sharing options...
smokeybandit Posted April 20, 2013 Share Posted April 20, 2013 Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why. Lots of big old trees. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted April 20, 2013 Share Posted April 20, 2013 Absolutely pouring here. My patio is flooded Want me to send in FEMA? Link to comment Share on other sites More sharing options...
Ian Posted April 20, 2013 Share Posted April 20, 2013 cold front has some nice rain rates Link to comment Share on other sites More sharing options...
clueless Posted April 20, 2013 Share Posted April 20, 2013 Underperformed in Leesburg. Link to comment Share on other sites More sharing options...
Ian Posted April 20, 2013 Share Posted April 20, 2013 my guess is something may have touched down south of here. pretty solid couplet for one scan. quick hitter tho and quickly fell apart/ran outside the late box. Link to comment Share on other sites More sharing options...
wxmeddler Posted April 20, 2013 Share Posted April 20, 2013 my guess is something may have touched down south of here. pretty solid couplet for one scan. quick hitter tho and quickly fell apart/ran outside the late box. Let me see if I can find anything on the TDWR's for that. In the mean time, here are my pictures for the day. Went about 30 miles W of college home out to the hilly farm country. Saw a shelf cloud and a rain-wrapped book end vortex mesocyclone (note the sharp convective left edge.) Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted April 20, 2013 Share Posted April 20, 2013 My hunch is that the wind drives up the rivers (Severn and Magothy) with the decreased friction and creates a microscale backed wind field. This increases the helicity in the lowest levels and you end up with brief spin-ups. I've often observed on my weather station at home that my winds are from the center of the river (120°) when the synoptic wind field is between 200° and 170°. Interesting, thanks!! It just seems over the years that this area often gets hit much harder than surrounding areas. Link to comment Share on other sites More sharing options...
Ian Posted April 20, 2013 Share Posted April 20, 2013 east coast ftw (and dc area split) Link to comment Share on other sites More sharing options...
Ian Posted April 20, 2013 Share Posted April 20, 2013 Let me see if I can find anything on the TDWR's for that. In the mean time, here are my pictures for the day. Went about 30 miles W of college home out to the hilly farm country. Saw a shelf cloud and a rain-wrapped book end vortex mesocyclone (note the sharp convective left edge.) shelfcloud_eastberlinPA_2136.PNG mesocyclone_eastberlinPA_2136..PNG cool shots Link to comment Share on other sites More sharing options...
SouthernNJ Posted April 20, 2013 Share Posted April 20, 2013 Wondering if there was a tornado in the Fredericksburg-Leland area in Stafford county. The reports coming in are suspicious and the rotating bookend comma head was moving through at the time. I would imagine LWX will do a survey. Could have been a macroburst instead though, as the SVR called for 70+ mph winds. Link to comment Share on other sites More sharing options...
mappy Posted April 20, 2013 Share Posted April 20, 2013 Absolutely pouring here. My patio is flooded Want me to send in FEMA? We survived, but thank you for the offer Link to comment Share on other sites More sharing options...
wxmeddler Posted April 20, 2013 Share Posted April 20, 2013 Slight brag. Thanks to AllWeather for the hook up on the Sat. morning newscast. Link to comment Share on other sites More sharing options...
Ian Posted April 21, 2013 Share Posted April 21, 2013 Fredericksburg Time: 2013-04-19 22:36 UTCEvent: 0 TORNADOSource: nws storm surveyRemark: ef-1 tornado confirmed by nws storm survey. peak winds 90 mph. path length 0.75 mile. max path width 150 yards. apartment building unroofed. trees uprooted and topped. shopping plaza roof damaged. Link to comment Share on other sites More sharing options...
wxmeddler Posted April 21, 2013 Share Posted April 21, 2013 Fredericksburg Time: 2013-04-19 22:36 UTC Event: 0 TORNADO Source: nws storm survey Remark: ef-1 tornado confirmed by nws storm survey. peak winds 90 mph. path length 0.75 mile. max path width 150 yards. apartment building unroofed. trees uprooted and topped. shopping plaza roof damaged. Downloaded the Level 2 data for that time. The level 3 data from the TDWR's are delayed two days. There was no TDS in the correlation coefficient. Link to comment Share on other sites More sharing options...
yoda Posted April 21, 2013 Share Posted April 21, 2013 Fredericksburg Time: 2013-04-19 22:36 UTC Event: 0 TORNADO Source: nws storm survey Remark: ef-1 tornado confirmed by nws storm survey. peak winds 90 mph. path length 0.75 mile. max path width 150 yards. apartment building unroofed. trees uprooted and topped. shopping plaza roof damaged. PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 958 PM EDT SAT APR 20 2013 ...TORNADO CONFIRMED IN THE CITY OF FREDERICKSBURG VIRGINIA... LOCATION...CITY OF FREDERICKSBURG VIRGINIA DATE...APRIL 19 2013 ESTIMATED TIME...6:36 PM TO 6:37 PM EDT MAXIMUM EF-SCALE RATING...EF-1 ESTIMATED MAXIMUM WIND SPEED...90 MPH MAXIMUM PATH WIDTH...150 YARD PATH LENGTH...0.75 MILES BEGINNING LAT/LON...38.30N / 77.49W ENDING LAT/LON...38.31N / 77.49W * FATALITIES...0 * INJURIES...0 * THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT(S) AND PUBLICATION IN NWS STORM DATA. ...SUMMARY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON DC HAS CONFIRMED A TORNADO STRUCK THE CITY OF FREDERICKSBURG VIRGINIA ON APRIL 19 2013 WITH MAXIMUM WINDS OF 90 MPH. THE TORNADO TOUCHED DOWN AT 6:36 PM EDT ON THE WESTWOOD SHOPPING PLAZA...RIPPING OFF ROOFING MATERIALS AND VENTILATION UNITS. IT TRAVELED NORTHEAST THROUGH A RESIDENTIAL AREA UPROOTING AND TOPPING TREES AND CAUSING ROOFING DAMAGE. THE TORNADO PASSED JUST WEST OF THE MERCER ELEMENTARY SCHOOL AND ADJACENT POLICE BARRACKS...RIPPING THE ROOF OFF OF AN APARTMENT BUILDING ALONG COWAN BLVD AND THROWING IT ACROSS THE STREET. A LAW ENFORCEMENT OFFICER SAW THE TORNADO CROSS COWAN BLVD AND THEN DISSIPATE BEFORE IT REACHED MARY WASHINGTON HOSPITAL AT 6:37 PM. THE TOTAL PATH LENGTH WAS THREE QUARTERS OF A MILE. THE NATIONAL WEATHER SERVICE EXTENDS ITS GRATITUDE TO CITY EMERGENCY MANAGEMENT FROM THE CITY OF FREDERICKSBURG FOR THEIR ASSISTANCE. Link to comment Share on other sites More sharing options...
Ian Posted April 21, 2013 Share Posted April 21, 2013 Did a little looking into weak tor that have killed people. This one (F1) was intense: http://www.crh.noaa.gov/top/events/whippoorwill.php Guess you don't want to be boating during a tornado. Link to comment Share on other sites More sharing options...
wxmeddler Posted April 22, 2013 Share Posted April 22, 2013 Got the TDWR files. Looks like the cirulation lasted about 2 minutes from the TDCA vantage point. The highest velocity was at 22:39:35z with 107 kts at 1818ft above radar elevation. The largest gate to gate was -104/-31.1 kts (72.9 kts) at 22:38:43 at 1972ft above radar elevation at the intersection of the Rappahannock river and US Rt. 1. Remember with the elevation the radar is looking at, the radar is looking downshear of the tornado. So given the location of the highest velocities, its right on track with the actual track. Link to comment Share on other sites More sharing options...
Ian Posted April 22, 2013 Share Posted April 22, 2013 Largo, MD Time: 2013-04-19 23:26 UTCEvent: 0 TORNADOSource: nws storm surveyRemark: ef-0 tornado confirmed. path length 0.5 mile. max path width 75 yards. max winds 85 mph. several trees uprooted and snapped. several homes had roofing and siding damage. few windows blown out. 2 homes had garage doors blown out....1 resulting in side wall of garage being blown out. Link to comment Share on other sites More sharing options...
Ian Posted April 22, 2013 Share Posted April 22, 2013 000NOUS41 KLWX 222052PNSLWXDCZ001-MDZ003>007-009>011-013-014-016>018-501-502-VAZ025>031-036>040-042-050>057-501>504-WVZ050>053-055-501>506-230900-DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND-EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY-WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON-EASTERN PENDLETON-PUBLIC INFORMATION STATEMENTNATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC452 PM EDT MON APR 22 2013...TORNADO CONFIRMED NEAR LARGO IN PRINCE GEORGES COUNTY MARYLAND...LOCATION...3 SSE OF LARGO IN PRINCE GEORGES COUNTY MARYLANDDATE...APRIL 19 2013ESTIMATED TIME...7:26 PM EDTMAXIMUM EF-SCALE RATING...EF-0ESTIMATED MAXIMUM WIND SPEED...85 MPHMAXIMUM PATH WIDTH...75 YARDSPATH LENGTH...0.5 MILESBEGINNING LAT/LON...38.837N / 76.813WENDING LAT/LON...38.843N / 76.807W* FATALITIES...0* INJURIES...0* THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TOCHANGE PENDING FINAL REVIEW OF THE EVENT(S) AND PUBLICATION INNWS STORM DATA....SUMMARY...THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON DC HASCONFIRMED A TORNADO NEAR LARGO IN PRINCE GEORGES COUNTY MARYLANDON APRIL 19 2013.AT 7:26 PM A BRIEF EF-0 TORNADO WITH PEAK WINDS OF 85 MPH TOUCHEDDOWN IN PRINCE GEORGES COUNTY IN THE MARLBORO RIDGE SUBDIVISIONOFF RITCHIE MARLBORO ROAD. THE TORNADO UPROOTED AND SNAPPEDSEVERAL TREES. IT ALSO DAMAGED THREE HOMES...BLOWING OUT WINDOWSAND GARAGE DOORS. ONE HOME HAD A SIDE WALL OF THE GARAGE BLOWN OUTWHEN WIND ENTERED THE GARAGE THROUGH THE DAMAGED DOOR. SEVERALOTHER HOMES ON BOTH SIDES OF RITCHIE MARLBORO ROAD HAD MINORSIDING AND SHINGLE DAMAGE. THE TORNADO TRAVELLED A HALF MILEBEFORE LIFTING AND LASTED LESS THAN A MINUTE.THANKS TO PRINCE GEORGES COUNTY EMERGENCY MANAGEMENT FOR THEIRASSISTANCE.THIS INFORMATION CAN ALSO BE FOUND ON OUR WEBSITE ATWEATHER.GOV/WASHINGTON.FOR REFERENCE...THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOESINTO THE FOLLOWING CATEGORIES:EF0...WIND SPEEDS 65 TO 85 MPH.EF1...WIND SPEEDS 86 TO 110 MPH.EF2...WIND SPEEDS 111 TO 135 MPH.EF3...WIND SPEEDS 136 TO 165 MPH.EF4...WIND SPEEDS 166 TO 200 MPH.EF5...WIND SPEEDS GREATER THAN 200 MPH. Link to comment Share on other sites More sharing options...
Ian Posted April 23, 2013 Share Posted April 23, 2013 I went back and looked at NCDC radar. That cell tracked from near cho to west of Trenton mostly independent (as a line segment). Link to comment Share on other sites More sharing options...
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