Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Martinsville, IN

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:32AMSunset 5:30PM Saturday November 18, 2017 9:08 AM EST (14:08 UTC) Moonrise 7:28AMMoonset 6:02PM Illumination 0% Phase: New Moon; Moon at 29 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
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7 Day Forecast for Marine Location Near Martinsville, IN
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location: 39.39, -86.48     debug


Area Discussion for - Indianapolis, IN
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Fxus63 kind 181046
afdind
area forecast discussion
national weather service indianapolis in
546 am est Sat nov 18 2017

Update
The aviation section has been updated below.

Synopsis
Issued at 332 am est Sat nov 18 2017
windy conditions and showers and thunderstorms, some strong
to severe, will impact central indiana today due to a rather
potent low pressure system. The highest precipitation and
thunderstorm chances will be this afternoon as an associated cold
front tracks across the forecast area. After that, much cooler and
drier air will follow in the wake of the cold front on Sunday.

Further out, another cold front and upper low will pass through
the region early in the week, but the best dynamics should keep
any precipitation chances north of the forecast area.

Near term today
Issued at 332 am est Sat nov 18 2017
the main focus of the near term period will be strong to severe
thunderstorms this afternoon with cold front passage.

Current radar mosaic has scattered showers with isolated
thunderstorms over the northern two-thirds of central indiana.

Lightning has been very limited so far, but there are a few
strikes moving through central illinois that will clip the
northern portions of central indiana over the next few hours.

Today, the southwest portions of the forecast area are now under a
slight risk for severe weather, while the remainder of central
indiana remains under a marginal risk as a low pressure system
moves through the region. Time cross sections indicate best
upward motion during the Sat 18-21z time frame, which coincides
well with the passage of an associated cold front and 50-60 kt low
level jet. As that cold front hits the weak to moderate
instability of the warm sector, this could be enough to generate
convective initiation. Highs this afternoon are projected to top
off in the low to mid 60s with dewpoints in the upper 50s low 60s.

Meanwhile, a wind advisory remains in effect from 11 am this
morning to 1 am est Sunday as sustained winds outside of any
storms reach speeds of 25 to 30 mph with gusts up to 45 to 50
mph.

Short term tonight through Monday night
Issued at 332 am est Sat nov 18 2017
thunderstorm potential will quickly taper off by Sun 00z with loss
of daytime heating and forcing. However, rain showers will persist
through Sun 06z. After that, drier and much colder air will filter
into central indiana with lows dipping into the upper 20s low 30s.

All moisture is expected to be out of the area though before any
transition from rain to snow will be possible.

After that, dry conditions will prevail through the end of the
short term period with some slightly warmer temperatures on Monday
with a weak warm front.

Long term Tuesday through Friday
Issued at 219 am est Sat nov 18 2017
ensembles indicate a rather quiet weather pattern can be expected
during this period, with little threat for precipitation.

A short wave trough is progged to pass through the great lakes
region around Tuesday, but the better dynamics and deeper moisture
look to stay to the north of the forecast area. Will continue
with a dry extended.

Aviation discussion for the 181200z tafs
Issued at 546 am est Sat nov 18 2017
most of the more organized shower and thunderstorm activity has
moved off to the northeast of the terminals, with the back edge
near klaf. Short term model guidance suggest an area of stronger
lift may move into the area after sunrise, so may see an increase
in shower and thunderstorms activity later this morning, especially
at the more northern terminals.

Additional organized thunderstorm activity is expected to develop
this afternoon as a cold front surges southeast across the area.

Brief ifr visibility restrictions and gusty shifting winds are
possible in and near heavier convection.

Model data suggest the core of a low level jet will be passing off
into ohio over the next few hours, so threat of low level wind
shear should diminish over the next several hours.

Outside of convective areas, ceilings generally in the 025-050
range today in the warm sector. Ifr ceilings possible this afternoon
behind the cold front.

Surface winds 190-210 degrees with frequent gusts 25-30 kts
ahead of cold front. Sharp wind shift to 310-340 degrees later
this afternoon with the passage of the cold front.

Ind watches warnings advisories
Wind advisory from 11 am this morning to 1 am est Sunday for
inz042>049-051>057-060>065-067>072.

Synopsis... Tdud
near term... Tdud
short term... Tdud
long term... .Jas
aviation... Jas


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bloomington, Monroe County Airport, IN18 mi75 minSSW 16 G 2310.00 miOvercast63°F54°F73%998.1 hPa

Wind History from BMG (wind in knots)
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Last 24hrSE10SE9SE8S9S10S8S9SE10SE9S9S12
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1 day agoW5NW5NW44N5NE3N5N4N6NE5CalmCalmCalmCalmCalmE5SE4SE6SE8SE9SE8SE11SE9SE11
G16
2 days agoS8S8SW11SW12
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W5W8W6W5W5W6W10NW7W11
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NW6NW733

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Indianapolis, IN (9,2,3,4)
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Ground Weather Radar Station Indianapolis, IN
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weather_mapweather_map weather_map

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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.