Monday, December10, 2018 L-36.com


Marine Weather and Tides
Martinsville, IN

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:53AMSunset 5:24PM Monday December 10, 2018 8:19 PM EST (01:19 UTC) Moonrise 10:34AMMoonset 8:28PM Illumination 12% Phase: Waxing Crescent; Moon at 3 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Martinsville, IN
   Hourly   EDIT   Help
location: 39.39, -86.48     debug


Area Discussion for - Indianapolis, IN
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kind 110113
afdind
area forecast discussion
national weather service indianapolis in
813 pm est Mon dec 10 2018

Update
The near term section has been updated below.

Synopsis
Issued at 350 pm est Mon dec 10 2018
high pressure will provide dry weather through Tuesday night. Then,
a great lakes system will bring a chance of mixed precipitation to
the area Wednesday and Wednesday night. After that, a stronger
southern system is expected to bring widespread rain to the area
late this week and into Saturday.

Temperatures will be normal or slightly above.

Near term tonight
Issued at 810 pm est Mon dec 10 2018
satellite and surface observations indicate lingering low cloud
over the northern and eastern zones is expanding a bit along the
southwestern edges. This may continue for the next several hours
as the boundary layer cools, but as the surface and 850mb ridge
axis shifts off to the southeast later tonight, should see the low
clouds start to clear out from the southwest. However, it may be
well into the pre dawn hours of Tuesday before clearing reaches
the northeast zones.

Based on above, will increase the cloud cover over the northern
zones tonight, and also hit the freezing fog a little harder over
the northwest zones, where visibilities are the lowest.

Otherwise, current temperatures are already at or slightly below
forecast lows. It appears temperatures may tail off a bit more
over the next several hours, before warm advection begins,
allowing temperatures to level off.

Previous discussion follows.

High pressure from the southern plains to the ohio valley will
result in dry weather tonight.

The main concern tonight will be if the stratus hangs around or not
and if we see more fog. Latest visible satellite loop was showing
the stratus field was gradually eroding from southwest to northeast
and was mainly confined to northeast and east central sections as of
3 pm. The GFS lamp and SREF keep the probability of stratus through
the night but probabilities are trending lower. With low levels
drying out a bit and cloud shield already eroding, do not think
stratus and or fog will be as big of a problem tonight as they were
last night and this morning. That said, both models have a non-zero
chance of fog tonight and forecast builder threw in patchy fog in
the grids. This seems like an ok compromise between no fog mention
and areas of fog.

Overnight lows will depend on the degree of stratus and or fog. So,
confidence is not high regarding the blend lows. Will accept them
with the caveat they may be too cold if more stratus and or fog
occur.

Short term Tuesday through Thursday
Issued at 350 pm est Mon dec 10 2018
surface high pressure will migrates southeast to the southern states
on Tuesday but that and an upper ridge will still influence the
weather and keep it dry through Tuesday night. Southwest winds
around the high will allow temperatures to return to seasonable with
highs Tuesday in the upper 30s to middle 40s per the blend.

Then, models agree that an upper low will lift northeast over the
lower great lakes Wednesday night. That said, moisture is limited
with this system, so blend small chances of precipitation look good,
mainly north, Wednesday and Wednesday night. Precipitation type
should mainly be rain, but it could start out briefly as freezing
rain or freezing drizzle northwest of crawfordsville and end as
light snow, freezing rain or freezing drizzle northeast of near a
lafayette to plainfield to columbus line Wednesday evening.

Finally, we will be on the outlook for a stronger system that will
impact central indiana late this week and into weekend. This will be
a southern system with much more moisture than the northern one.

This will bring widespread rain to the area Thursday and beyond.

Could see rain over out southwestern counties Thursday morning as
the area will be in diffluent flow ahead the center of low pressure,
over northeastern texas. In addition, 30 plus knot low level jet
will be nosing into southestern indiana in increasing southerly low
level flow.

Good confidence in normal to above normal blend highs in the 40s.

Long term Thursday night through Monday
Issued at 200 pm est Mon dec 10 2018
the long term period continues to look active, particularly early,
with a large cyclone impacting the area. Models continue to differ
between models and between runs on track and impacts, but at the
moment temperatures appear warm enough that the bulk of the
precipitation will fall as rain.

Some guidance shows a secondary upper level low late in the period
dropping into the area which may be a precip threat as well. For
now see little advantage to departing significantly from the
blended initialization.

Aviation discussion for the 110000z tafs
Issued at 529 pm est Mon dec 10 2018
low confidence forecast this evening with respect to ceilings as
an area of ifr ceilings 005-009 agl lingers over parts of the
area.

This area has been eroding from the edges during the course of the
afternoon, but may see these ceilings expand for a time this
evening as the boundary layer cools. The klaf kind terminals seem
to be at the highest risk of this happening. Surface and 850mb
ridge axes should pass off to the southeast after 110600z, so
should see the threat for ifr ceilings diminish late in the night
as a southwesterly wind develops. Will watch the trends up until
issuance time.

Otherwise, light surface winds this evening will become 210-240
degrees at 5-9 kts after 110600z.

Ind watches warnings advisories
None.

Synopsis... Mk
near term... Mk jas
short term... Mk
long term... Nield
aviation... Jas


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bloomington, Monroe County Airport, IN18 mi26 minN 05.00 miFog/Mist18°F15°F88%1026.5 hPa

Wind History from BMG (wind in knots)
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last 24hrN7N7N5N4N3CalmCalmN4CalmCalmCalmCalmCalmN6Calm3NW3N5N4N4N4CalmCalmCalm
1 day agoNE10NE10E7E6NE5NE7NE8NE6NE4NE4N5N8NE5NE6NE6N7NE6N9NE9N10N8N6N7N6
2 days ago3N6N6CalmN9N11N6N6N6NE4N4CalmNE7NE7E11E9E8NE8NE9NE9NE8E9E7E8

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Indianapolis, IN (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Indianapolis, IN
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.