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wxmeddler

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About wxmeddler

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  • Four Letter Airport Code For Weather Obs (Such as KDCA)
    KCGS
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    Male
  • Location:
    Laurel,MD

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  1. wxmeddler
    Well, at least I only got wet this time and and not a concussion. But it was refreshing. Needed a cool off from planting.
  2. wxmeddler
    I had a garden hose go wild on me and got me good. Actually felt cold with the wet-bulb + wind! Good stuff.
  3. wxmeddler
    80 mph straight line winds determined by LWX survey last night near Libertytown (Frederick Co.) https://partnerservices.nws.noaa.gov/products/cache/166-2026/PNSLWX/187943434c0858f4f13424bc30b0894e
  4. wxmeddler
    Sonic Anemometers in general have systematic issues when there is dust / pollen or other particulates in the air. Even rain coming in sideways interferes with the calculations. Which, guess what, is common when there are gust fronts / thunderstorms. Some brands of sonic's have better error rejection than others, but for whatever reason Vaisala's are particularly bad. Which is a shame because it's what both ASOS and many DOT/RWIS networks use. The "Mesonet" source in the LSR's is a catch all for all different networks including DOT and even some of the PWS stations. It's an issue with the LSR program, there is not enough categories to properly differentiate an actual state mesonet (like MD Mesonet) and a RWIS network like MD SHA's. All MD Mesonet sites use traditional propeller anemometers. RM Young 05108's to be exact. MD SHA's RWIS network uses "all-in-one" T/RH/Sonic for reduced maintenance intervals / costs. But they are not good. lol.
  5. wxmeddler
    NoVA got skunked. Line to the west is fading. Just showers later I would think.
  6. wxmeddler
    Poppin off. Sunset magic hour. Boundary layer decouples and you get a stray gust front (La Plata storm) or subtle s/w aloft and go time.
  7. wxmeddler
    BWER on the E Frederick / W Carroll Cell
  8. wxmeddler
    There's nothing nearby, it's just the sfc parameters are still juiced. I think the lack of convection SW of DC is due to earlier showers in SW VA that had the area in cloudcover most of the afternoon. The sfc never quite destabilized enough down that way for sfc based convection to take hold.
  9. wxmeddler
    The CAM's really gusted out / crashed the surface parameters by this time and by looking at surface obs, that is just not the case. We have not overturned at all in the DC Metro. There's a lot of sfc energy still bouncing around.
  10. wxmeddler
    Will be interesting to see if this line crossing the plateau stays together. Most CAM's say no once it gets to the great valley, but we all know how that has gone over before.
  11. wxmeddler
    Heck of a hail-filled updraft near LaPlata
  12. wxmeddler
    Definitely a plume across Central MD. Though it seems lower dews are just above the surface. The Layhill station recently gusted to 25 mph which coincided with a dew point drop to 63. Back up to 67 now.
  13. wxmeddler
    This is an issue with MADIS. The 83 mph gust is from a sonic anemometer on top of the Bay Bridge. That is the first report. The second 83 mph report in Parole is false, it’s due to a bug that duplicates the Bay Bridge sensor at SHA headquarters in Parole. The lay/lon is wrong in MADIS. The 75 mph gust is from a buoy at the mouth of the Severn.
  14. wxmeddler
    T-Storm Warning for NoVA
  15. wxmeddler
    Some thoughts on yesterday, then today... Yesterday: Anytime you get a "swashed spider" hodograph, the storms are going to be weaker and messier than just looking at the thermodynamics would expect you to believe. Venting, inflow, water loading, updraft velocity are all going to be negatively impacted. That said, yesterday there was a decent shortwave and enough low level instability that allowed a few storms to develop over/west of the mountains and get the cold pool party started. Once the cold pool production began, the ambient DCAPE and torrid conditions was enough to sustain weak pulse like thunderstorms to the ocean. Limbs start to fail around these parts at around 30 mph, and you start seeing downed trees around 45-50 mph. That is just the nature of the flora in our region, they don't get hit often and so even weak storms do damage. Today: Another weak wave as part of the packet that spawned the tornado outbreak in IL/IN yesterday will move into the western region this afternoon. Theta-E values in excess of 350K with minimal MLCIN should be enough to spark off scattered showers. While overall wind speeds in the lower troposphere are higher today, shear magnitudes remain weak, especially above 3km. Cold Pool propagation and aggregation of these showers should spawn further flank development of showers and thunderstorms. Due to the higher windspeeds aloft today compared to yesterday, storm and cold pool motions will likely be 10kts faster than yesterday. Therefore ground relative windspeeds should be slightly higher today. The question will be storm coverage, which we really won't know for sure until things fire after 3PM. CAM's are hinting that areas south of US50 are more likely than up near the M/D line.
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