The Monster Storm Thread

[Fodie77]

All right, I've been gone all day. How's it looking for areas north and west of D.C., in northern VA?

[IndianaJonesDDT]

What the heck, I might as well throw it out for people to see it....I'm talking about the map! LOL

[fasteddy77]

So, what's the key on the map above??

[asmithmd1]

I am having some trouble reading the model output because I can not find a key. Below is a detail of the NAM forecast for 1 PM tomorrow. The colored areas are the total precipitation over 6 hours. There is a key on the left with numbers but no label. I am guessing it is inches of liquid, can anyone confirm? The thin solid black line I am sure are isobars with the units being millibars. I am guessing the dotted red and blue lines are isotherms with blue being below freezing and red above freezing, but I can not figure what the units are. They are obviously not degrees Celsius or Fahrenheit. If the red and blue assumption is correct the units can't absolute temp in Rankine or Kelvin either. Does anyone know the units for the dotted red and blue lines?

[IndianaJonesDDT]

I am having some trouble reading the model output because I can not find a key. Below is a detail of the NAM forecast for 1 PM tomorrow. The colored areas are the total precipitation over 6 hours. There is a key on the left with numbers but no label. I am guessing it is inches of liquid, can anyone confirm? The thin solid black line I am sure are isobars with the units being millibars. I am guessing the dotted red and blue lines are isotherms with blue being below freezing and red above freezing, but I can not figure what the units are. They are obviously not degrees Celsius or Fahrenheit. If the red and blue assumption is correct the units can't absolute temp in Rankine or Kelvin either. Does anyone know the units for the dotted red and blue lines?

either ways, it says that I'll be above freezing. Looks like I'll get heavy rains....1.5 inches.

[DS]

Blue and red dashed lines are 1000-500 mb thicknesses. The blue line closest to the red is the 540 decameter thickness, or the magic number between rain and snow. The first red line closest to the blue line is the 546 dm thickness.HOWEVER, in this case, the 543 thickness (interpolate between the red and blue), is a good approximation for rain vs snow, due to the strength of the storm. It should be noted that the model you showed is the ETA and its wayyyy farther west than anything else.

[recmod]

While most of the replies in this thread are discussing who is going to get significant snow accumulations with this storm, I thought I'd send a few pictures of the storm's current effects here in Central Florida.

The rain began about midnight last night and has, in the past two hours, gotten very heavy. At 11am, the NWS has issued a tornado watch for all of Central Florida until 6pm.

These pictures were taken at my house around 11am, showing the flooding that is starting to occur as the rain is falling faster than the ground can absorb.




--Lou