Jump to content
  • Member Statistics

    17,586
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Jan 17 SN/IP/ZR/RA event Obs thread


ORH_wxman

Recommended Posts

Didn't see an obs thread, but if there was one already made and I somehow missed it, then post the link and I'll merge them. Try to keep this as obs for tracking the sleet line this morning and eventually tracking the rain/freezing rain line.

Looks like the light snow has reached HFD before 07z.

2011011806metarsalb.gif

jan173amradar.gif

Link to comment
Share on other sites

  • Replies 268
  • Created
  • Last Reply

Light dusting here in Waterbury CT @ 16 degrees with light but steady snow.

Temps dropped all across CT the last few hours which indicates more ice and less rain tomorrow IMHO:

08z temps in CT (last three are on the shoreline)

KBDL 16

KDXR 18

KHFD 18

KIJD 18

KMMK 18

KOXC 16

KSNC 19

KGON 24

KHVN 22

KBDR 23

Link to comment
Share on other sites

sleet already! Wow the warm air is flying in aloft!

I'm surprised its snuck in there...places like HPN and the posters nearby havent mixed with any sleet yet....though its possible that if the precip lightened up a tad it could mix.

Link to comment
Share on other sites

I'm surprised its snuck in there...places like HPN and the posters nearby havent mixed with any sleet yet....though its possible that if the precip lightened up a tad it could mix.

Also I should add that I mentioned in the NYC thread that the sleet on the northern fringe there was being caused by a very strong warm punch from the SE at 900-950mb....not the usual 800-850mb being the warmest layer as we so often see in sleet.

The 925mb warm punch will encounter a lot more resistance inland where the thermal gradient is stronger, so we'll have to watch that...sleet line could come to a halt for a bit.

Link to comment
Share on other sites

Also I should add that I mentioned in the NYC thread that the sleet on the northern fringe there was being caused by a very strong warm punch from the SE at 900-950mb....not the usual 800-850mb being the warmest layer as we so often see in sleet.

The 925mb warm punch will encounter a lot more resistance inland where the thermal gradient is stronger, so we'll have to watch that...sleet line could come to a halt for a bit.

You can see that nicely on radar....

Link to comment
Share on other sites

It seems the NAM is doing better than the GFS and ECMWF for the thermal profiles aloft on the 00z guidance...the sleet has penetrated the lower Hudson Valley and SW CT....something that the other guidance said wouldn't happen until about 12z.

Though the NAM may still be too aggressive with the advancement of the sleet line by 12z where it had it up at the MA/CT border NE of Kevin at 12z....the 06z NAM backed off on that idea running it just S of HFD or so.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...