ISPA-2002: Logbook Entries

ISPA-2002: mm5 Messages: 4 Entries..

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Entry Date Title Site Author #Graphics
112 Mon 25-Feb-2002mm5 from Jameson Date: Mon, 25 Feb 2002 11:05:54 -0700SNOWFALL02Mike
106 Mon 25-Feb-2002mm5 from Jameson Date: Sun, 24 Feb 2002 11:48:48 -0700SNOWFALL02Mike
98 Fri 22-Feb-2002mm5 from Jameson Date: Fri, 22 Feb 2002 10:57:49 -0700SNOWFALL02Mike
95 Thu 21-Feb-2002mm5 from Jameson Date: Thu, 21 Feb 2002 11:56:26 -0700SNOWFALL02Mike


112: mm5 , Site SNOWFALL02, Mon 25-Feb-2002 18:17:53 GMT, mm5 from Jameson Date: Mon, 25 Feb 2002 11:05:54 -0700
Date: Mon, 25 Feb 2002 11:05:54 -0700
From: James Pinto 
To: Mike Susedik 
Cc: Steve Cohn , cohn@ucar.edu, wbrown@ucar.edu,
     tianyou@ucar.edu
Subject: Re: ISPA dos cero cewro dos ending?

Hi All,

Snow to end early today if it has not already. Lots of clouds around 
though. This
will be the last MM5 run for Steamboat as I will switch over to Reno for
tonight's run.


#OBSV:
Snow and low clouds ending at 18:19 utcish. 

106: mm5 , Site SNOWFALL02, Mon 25-Feb-2002 00:54:42 GMT, mm5 from Jameson Date: Sun, 24 Feb 2002 11:48:48 -0700
Date: Sun, 24 Feb 2002 11:48:48 -0700
From: James Pinto 
To: James Pinto 
Cc: cohn@ucar.edu, wbrown@ucar.edu, tianyou@ucar.edu, susedik@atd.ucar.edu
Subject: Re: Todays Forecast 02-23 (12Z) to 02-24 (12Z)

Snow tappers off this morning but redevelops late this afternoon 
starting around 23 UTC, Feb 24.
Snow will be light for the most part, but some riming can be expected 
with LWPs as high as 350 g m-2. Riming period and snow ends around 9 UTC, Feb 24 as the profile dries out.
Werner Mtn will be in and out of the clouds next 24 hours so they should 
be able to capture the riming event with snow fall totals of 4-8 cm.

Vertical velocities between 0.5 and 1.5 m s-1 throughout most of period 
below 4 km, with maximum updrafts around 3 UTC.

Winds predominantly from the west and increasing with time with max 
winds at the end of the 24 hour period. 


#OBSV:
Through the noon hour local time here the mountain got very clear. Broken clouds throughout the area. Probably 60% coverage. 

Snow seemed to start at 2300 UTC at the top of the mountain and seemed to start down here not long afterwards. 
98: mm5 , Site SNOWFALL02, Fri 22-Feb-2002 18:21:36 GMT, mm5 from Jameson Date: Fri, 22 Feb 2002 10:57:49 -0700
 Date: Fri, 22 Feb 2002 10:57:49 -0700
From: James Pinto 
To: James Pinto , cohn@ucar.edu, wbrown@ucar.edu,
     tianyou@ucar.edu, susedik@atd.ucar.edu
Subject: Todays Forecast 02-22 (12Z) to 02-23 (12Z)


Today's forecast: DRY!

Some high cirrus clouds around today otherwise nothing to speak of
clouds/pcp-wise.

Over NCAR site:
Persistent layer of upward motion (0.1-0.5 cm s-1) between 700 m - 1500
m, and
sometimes extending over 4 km.

Low level winds are weak and variable from SE to NE until late in the
period when they become more southerly as deep layer of southwesterlies
moves in.

Moist layer originating at 2 km finds its way downward to the surface
around 00 UTC, Feb 23.

NWS say next chance for SNOW: Tomorrow Night through Sunday.

#OBSV:
High Heavy cirrus layer. Darker bluish to the north. MAPR says winds light <5m/s to 2 km and >20m/s above and from easterly. 


95: mm5 , Site SNOWFALL02, Thu 21-Feb-2002 22:29:46 GMT, mm5 from Jameson Date: Thu, 21 Feb 2002 11:56:26 -0700
Date: Thu, 21 Feb 2002 11:56:26 -0700
From: James Pinto 
To: James Pinto , cohn@ucar.edu, wbrown@ucar.edu,
     pinto@ucar.edu, tianyou@ucar.edu, susedik@atd.ucar.edu
Subject: Todays Forecast 02-21 (12Z) to 02-22 (12Z)

Hi All,

Sorry for the late start. Today's forecast is now available.

Not much going on precip wise next 24 hours through 12 Z tomorrow.

Some high clouds around this evening (00 UTC, Feb 22).

The water vapor profile is quite interesting though. With a
very dry layer around 2 km and a moist layer coming in
around 3 UTC, Feb 22 between 2 and 3 km.


Low level winds shift from the north to SSE around 3 UTC. Strong
winds from the north aloft, with speeds of up to 32 m s-1 at 4 km.

Observations:
The day has been clear all day. There could be some type of layer as
the profilers seem to show. To the west there is some high cirus clouds,
and SPL is completely clear. 

Not in the MM5 is the fact that we'd be buzzed by a F16 at 2200