midatlanticweather Posted June 9, 2021 Share Posted June 9, 2021 6 minutes ago, KAOS said: Are you saying that the furnace (indoor) fan runs even when the AC (outdoor) is not "pumping out cold air"? And why if you turned it off would you not be able to turn it back on? Forgive me if this was already discussed. Assuming the fan is running while the AC is not pumping out cold air, that alone will cause high levels of humidity. The fan needs to cycle with the AC. This gives time for the condensation to run down the indoor coil and drain out of the condensate line. Otherwise you are just re-circulating most the humidity in your house. Ya! Running the fan continuously will put humidity back in the home as it evaporates it off the coils while still inside. This is especially true with all the humidity! @mappy AC troubles stink! Sorry you are stuck with that challenge and expense. Link to comment Share on other sites More sharing options...
Rvarookie Posted June 9, 2021 Share Posted June 9, 2021 Finally got some rain after putting down some nitrogen earlier this week. Grass going to be on roids soon. Hopefully baseball cancelled tonight Link to comment Share on other sites More sharing options...
CAPE Posted June 9, 2021 Author Share Posted June 9, 2021 From Mount Holly AFD- Several hires CAM`s are indicating that the storms will evolve in sort of three waves. The first, has basically already occurred with storms that developed across DelMarVA. These storms began to interact with each over and one ended up having its outflow run into a developing updraft producing several funnel clouds over Delaware this afternoon. The outflow boundaries from these storms will start to propagate north across SEPA and central Jersey through the rest of the afternoon as the forcing remains weak over the region. Heading into this evening the cold front should eventually start to slide south out of NY and will become the trigger for the third round of convection this evening and overnight. The good news is that precipitable water values should decrease considerably tonight behind the cold front. Thus, expect the risk for heavy rain to decrease by late this evening. Link to comment Share on other sites More sharing options...
CAPE Posted June 9, 2021 Author Share Posted June 9, 2021 Ensembles have been advertising this pattern for awhile now, and its still looking good. Hard to beat an h5 longwave look like this for the middle part of June. 4 Link to comment Share on other sites More sharing options...
NorthArlington101 Posted June 9, 2021 Share Posted June 9, 2021 The pattern this week sucks. Shut it down. 2 Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted June 9, 2021 Share Posted June 9, 2021 4 hours ago, mappy said: oh our compressor is running, as we have cold air coming out of the vents. humidity dropped to 54% since this morning, so who knows. i have a feeling my humid issues indoors is more our windows then the ac itself not doing its job. Ok so quick question … do you have a basement or crawl space? And was your ac out for a bit? Could be that it’s just gonna take some time for the humidity to go back down. From your posts it seems that it is dropping. 1 Link to comment Share on other sites More sharing options...
vastateofmind Posted June 9, 2021 Share Posted June 9, 2021 How's the humidity feel out in the Valley yesterday and today, @WinterWxLuvr? We just returned from walking doggo, was about 90 degrees when we started just after 5 p.m. with humidity probably in the high 60s. High clouds have since moved in here, but it's still damn muggy out. Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted June 10, 2021 Share Posted June 10, 2021 2 hours ago, vastateofmind said: How's the humidity feel out in the Valley yesterday and today, @WinterWxLuvr? We just returned from walking doggo, was about 90 degrees when we started just after 5 p.m. with humidity probably in the high 60s. High clouds have since moved in here, but it's still damn muggy out. Like soup today. Not especially hot but very muggy. 1 Link to comment Share on other sites More sharing options...
osfan24 Posted June 10, 2021 Share Posted June 10, 2021 Euro said I was getting 4 inches of rain this week. I haven't seen a drop yet. 3 Link to comment Share on other sites More sharing options...
EastCoast NPZ Posted June 10, 2021 Share Posted June 10, 2021 20 minutes ago, osfan24 said: Euro said I was getting 4 inches of rain this week. I haven't seen a drop yet. Yep, me either. Link to comment Share on other sites More sharing options...
Kay Posted June 10, 2021 Share Posted June 10, 2021 Getting a garden-watering from the edges of the Harford Co. storm. There was plenty of lightning to watch during its approach. Link to comment Share on other sites More sharing options...
coolio Posted June 10, 2021 Share Posted June 10, 2021 I was on the outer loop of the beltway coming from Potomac exit (cabin john?) to NoVA last night around 10 or 11. Caught a good cell. Pouring. Saw a lot of cars pulled over on the beltway with flashers on. Crossed over the Am. Legion bridge, nary a drop in NoVA. Link to comment Share on other sites More sharing options...
yoda Posted June 10, 2021 Share Posted June 10, 2021 7 hours ago, osfan24 said: Euro said I was getting 4 inches of rain this week. I haven't seen a drop yet. 6 hours ago, EastCoast NPZ said: Yep, me either. You get a FFW! Flood Watch National Weather Service Baltimore MD/Washington DC 253 AM EDT Thu Jun 10 2021 DCZ001-MDZ001-003>006-011-013-014-016>018-501>506-VAZ027-028-030-031- 052>054-501-505-506-WVZ050>053-055-501>504-101500- /O.NEW.KLWX.FF.A.0002.210610T1600Z-210611T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ District of Columbia-Garrett-Washington-Frederick MD-Carroll- Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Extreme Western Allegany-Central and Eastern Allegany-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard-Shenandoah- Frederick VA-Warren-Clarke-Prince William/Manassas/Manassas Park- Fairfax-Arlington/Falls Church/Alexandria-Northern Fauquier-Western Loudoun-Eastern Loudoun-Hampshire-Morgan-Berkeley-Jefferson-Hardy- Western Grant-Eastern Grant-Western Mineral-Eastern Mineral- Including the cities of Silver Spring, Waldorf, South Gate, Bowie, Arlington, Purcellville, Bayard, Sterling, Columbia, Ashburn, Mount Jackson, Front Royal, Leesburg, Russelldale, Grantsville, Lexington Park, Frostburg, Lusby, Montclair, Alexandria, Paw Paw, Washington, Warrenton, Franconia, Ridgeville, Mount Storm, Charles Town, Winchester, Damascus, Petersburg, Chantilly, Ballenger Creek, Huntingtown, College Park, Chesapeake Beach, Greenbelt, McLean, St. Charles, Lake Ridge, Laurel, Mountain Lake Park, Eldersburg, Clinton, Glen Burnie, Strasburg, Elk Garden, Odenton, Woodstock, Bethesda, Prince Frederick, Centreville, Camp Springs, California, Germantown, Rockville, Hagerstown, North Beach, Fort Ashby, Falls Church, Severn, Ellicott City, Annandale, Cockeysville, Gaithersburg, Headsville, Shepherdstown, Cumberland, Herndon, Annapolis, Keyser, Martinsburg, Westminster, Antioch, Dunkirk, Moorefield, Reisterstown, New Market, Severna Park, Berryville, Frederick, Arnold, Dale City, Suitland-Silver Hill, Manassas, Reston, Baltimore, New Creek, Woodbridge, Romney, Lisbon, and Oakland 253 AM EDT Thu Jun 10 2021 ...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... The National Weather Service in Sterling Virginia has issued a * Flash Flood Watch for portions of DC...Maryland...Virginia and West Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Calvert, Carroll, Central and Eastern Allegany, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Extreme Western Allegany, Frederick MD, Garrett, Northern Baltimore, Northwest Howard, Northwest Montgomery, Prince Georges, Southern Baltimore, St. Marys and Washington. In Virginia, Arlington/Falls Church/Alexandria, Clarke, Eastern Loudoun, Fairfax, Frederick VA, Northern Fauquier, Prince William/Manassas/Manassas Park, Shenandoah, Warren and Western Loudoun. In West Virginia, Berkeley, Eastern Grant, Eastern Mineral, Hampshire, Hardy, Jefferson, Morgan, Western Grant and Western Mineral. * From Noon EDT today through this evening * A cold front will drop southward into the area today. This front will become the focus for slow moving thunderstorms this afternoon and evening. Because of the slow motion and ample moisture in the atmosphere, storms may drop 2 to 4 inches of rain a short period of time, resulting in flash flooding. * Heavy rainfall in a short amount of time can result in rapid rises of water in streams, creeks, and urban areas. 1 Link to comment Share on other sites More sharing options...
CAPE Posted June 10, 2021 Author Share Posted June 10, 2021 1 Link to comment Share on other sites More sharing options...
CAPE Posted June 10, 2021 Author Share Posted June 10, 2021 Discussion- ...Ohio Valley into the Mid Atlantic... A broad and slow moving mid/upper level trough will result in scattered to widespread convection today from the Ohio Valley into the Mid Atlantic. The environment will be conducive for very heavy rainfall rates. PWs are above the 90th percentile, and wet bulb zero heights ranging from 12-14k AGL are pretty much as high as you will see in early June over this region. Thus efficient warm rain processes will likely dominate today/tonight. Instability is likely a limiting factor for depth/intensity of cells...however the aforementioned moisture parameters would still favor shallow low topped cells capable of very heavy rain rates. The other limiting factor is longevity of cells at any one location...as cells should generally pulse up and down rather quickly. The weak instability potentially restricting the coverage of heavier cells, and the short lived nature of most cells, may prevent a more widespread flash flood risk today/tonight. However slow cell motions and heavy short duration rates will likely still be enough to result in scattered flash flooding. There is certainly some potential for a more widespread and significant event today over portions of WV and VA given the efficient environment in place. A backdoor front dropping southwestward will be a convective focus today, potentially helping sustain a corridor of cell mergers...as it interacts with terrain induced cells and slow moving cells downstream of the front. The event today/tonight has Moderate risk potential over portions of WV/VA...but a bit too much uncertainty on the coverage/magnitude of impacts to go with the upgrade at this point. At the minimum we are expecting isolated to scattered flash flooding today. At the worst we could be dealing with more numerous flash flooding, some of which could be locally significant. We will continue to monitor trends through the day. Link to comment Share on other sites More sharing options...
BlizzardNole Posted June 10, 2021 Share Posted June 10, 2021 Flash flood watch LOL. I'll be surprised if I get through this week with more than 0.3. Currently at 0.0 Looking forward to a nice weekend though and some great temps next week. 1 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted June 10, 2021 Share Posted June 10, 2021 8 hours ago, osfan24 said: Euro said I was getting 4 inches of rain this week. I haven't seen a drop yet. Overnight euro still gives us 2-3” before Saturday. I’m hoping... Link to comment Share on other sites More sharing options...
H2O Posted June 10, 2021 Share Posted June 10, 2021 23 minutes ago, WxUSAF said: Overnight euro still gives us 2-3” before Saturday. I’m hoping... When has the euro ever failed us? Oh thats right. Multiple times this past winter. Congrats Short Pump 1 3 1 Link to comment Share on other sites More sharing options...
mappy Posted June 10, 2021 Share Posted June 10, 2021 this is a hell of a photo 16 Link to comment Share on other sites More sharing options...
H2O Posted June 10, 2021 Share Posted June 10, 2021 5 minutes ago, mappy said: this is a hell of a photo tons of really great eclipse pics this morning 1 Link to comment Share on other sites More sharing options...
yoda Posted June 10, 2021 Share Posted June 10, 2021 33 minutes ago, WxUSAF said: Overnight euro still gives us 2-3” before Saturday. I’m hoping... Is this before the change to rain or before the 850 0C isotherm goes blasting by? 1 Link to comment Share on other sites More sharing options...
nj2va Posted June 10, 2021 Share Posted June 10, 2021 6 hours ago, coolio said: I was on the outer loop of the beltway coming from Potomac exit (cabin john?) to NoVA last night around 10 or 11. Caught a good cell. Pouring. Saw a lot of cars pulled over on the beltway with flashers on. Crossed over the Am. Legion bridge, nary a drop in NoVA. Haven’t seen a drop this week. 2 Link to comment Share on other sites More sharing options...
weatherCCB Posted June 10, 2021 Share Posted June 10, 2021 Not a drop here again last night. Flash flood watch ? We’ll see. hoping for a shower at least. 71/67 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted June 10, 2021 Share Posted June 10, 2021 Meso guidance really liking the Potomac River counties this afternoon. 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted June 10, 2021 Share Posted June 10, 2021 HRRR and Herpderp both do this “hop over HoCo” thing this afternoon and I’m going to punch kittens if they’re right. 2 Link to comment Share on other sites More sharing options...
frd Posted June 10, 2021 Share Posted June 10, 2021 1 hour ago, nj2va said: Haven’t seen a drop this week. Yeah, big dissapointment here so far for Delaware in my area. Storms missed to the North and to the East. Almost as hard to get some decent rain here as it is to get snow during the winter. 1 Link to comment Share on other sites More sharing options...
wxdude64 Posted June 10, 2021 Share Posted June 10, 2021 So... I've had more rain the first 10 days of this month (2.11) than ALL of last month (1.51). Link to comment Share on other sites More sharing options...
yoda Posted June 10, 2021 Share Posted June 10, 2021 Sunny morning sky outside... better lead to some good storms this afternoon Link to comment Share on other sites More sharing options...
EastCoast NPZ Posted June 10, 2021 Share Posted June 10, 2021 I'm making preparations for my flash flood now. Applying liberal amounts of sunscreen and filling my watering can. DP 72F. 2 Link to comment Share on other sites More sharing options...
yoda Posted June 10, 2021 Share Posted June 10, 2021 Just now, EastCoast NPZ said: I'm making preparations for my flash flood now. Applying liberal amounts of sunscreen and filling my watering can. DP 72F. No sprinkler? Link to comment Share on other sites More sharing options...
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