Thursday, October28, 2021
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Marine Weather and Tides
Martinsville, IN

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 8:08AMSunset 6:51PM Thursday October 28, 2021 5:06 PM EDT (21:06 UTC) Moonrise 11:53PMMoonset 2:14PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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 281853 AFDIND

Area Forecast Discussion National Weather Service Indianapolis IN 253 PM EDT Thu Oct 28 2021

Short Term. (This evening through Friday night) Issued at 252 PM EDT Thu Oct 28 2021

Rest of Today and Tonight.

As of early this afternoon a strong upper level closed low was centered over southeastern Missouri with Indiana along the northeastern periphery. This is leading to an area of moderately strong isentropic across central Indiana with latest radar imagery showing widespread light to moderate rain. With the location in comparison to the low, no strong temperature advection has kept temperatures near steady in the low 50s and is keeping instability near 0. Going into later today and tonight the low will continue to move east with a gradual shift to more northerly winds by early tomorrow. Precipitation is expected to continue through the night but gradually less in coverage as the 700 and 850mb moisture advection is cut off by the low. As winds begin to decrease late tonight fog looks probable for much of the area with the very moist near surface layer. With the cloudy skies and non-zero wind, coverage of dense fog looks to be low enough not to warrant any headlines but will continue to monitor. Confidence in the fog lessens further north near Lafayette due to higher expected surface winds.

Friday and Friday Night.

By tomorrow morning the low will have moved over Tennessee with CAA advection near the surface near calm winds aloft as the jet stream dives south across the Gulf of Mexico. A widespread area of weak vorticity associated with the low will continue to bring light rain showers across the Midwest as it interacts with the residual moisture in the atmosphere. Coverage and intensity will be fairly light. Another round of heavier rain is then expected for late Friday into Friday night as a secondary surface low pressure strengthens and a stronger vort max aloft provides enough lift for brief heavier rain. The fairly moist near surface will help keep temperatures more mild with lows near 50 across the area.

Long Term. (Saturday through Thursday) Issued at 252 PM EDT Thu Oct 28 2021

Saturday will include the final period of damp weather as the broad upper trough and the associated surface low along the Ohio Valley slide eastward. Drizzle and any isolated light showers will taper off while ending from west to east, with noticeably drier air arriving from the west through mid levels by late day . and throughout lower levels by Saturday evening. High confidence any additional rainfall would be under 0.10 inches. Saturday night- Sunday . a narrow upper ridge, lodged between the highly-amplified departing and approaching upper troughs, will flatten while bringing partial clearing and fair, seasonably chilly weather to central Indiana.

Sunday night through late week will feature a regime change to cooler and consistently chillier temperatures as the zonal pattern is slowly replaced by a broad H500 trough over most of the US . with embedded short wave troughs flowing from central Canada through the Great Lakes. Ensembles are showing high confidence in below normal temperatures as the corresponding elongated dome of high pressure enters the Mid-West . with, from early Tuesday through the late week, the H1000-H500 540 dm line stretched across central/southern Indiana . and H850 temperatures generally 0 to -5C over the CWA. Less certain are timing/location of the embedded waves passing just north of our region . and therefore also any brief overrunning precipitation that may occur in the Monday night-early Tuesday . as well as the final couple periods of the long term.

For the first time this autumn the boundary later will be occasionally cold enough to support wet snow reaching the surface, although low confidence at this time in any non-rain precip types through the end of the long term . and no accumulating snow is expected. Generally northerly winds should be tame as long as the vorts and surface ridge axis stays just to our north, with light breezes common during the daytime. Ample sun through early Monday will then yield more partly/mostly cloudy skies through late week, as moisture overruns the dome of high pressure from the south.

Temperatures will trend from near to slightly above normal through Saturday night . to near seasonable early week . and then below normal midweek. The last time Indianapolis recorded more than 5 consecutive days with below normal temperatures was early August.

Aviation. (18Z TAF Issuance) Issued at 1237 PM EDT Thu Oct 28 2021

IMPACTS: -VFR cigs will deteriorate to IFR to LIFR after 21Z. -Occasional MVFR vsbys from rain, possible IFR to LIFR vsbys from FG from 09Z to 12Z. -Easterly winds gusting to 20kts at times this afternoon.

DISCUSSION: Occasional rain is expected through the TAF period with most widespread coverage through the afternoon hours. Vsbys will generally remain VFR with short bursts of MVFR in heavier showers. Cigs will drop through the day with IFR to LIFR cigs after 21Z. Fog development is expected late tonight at all sites but LAF where winds will remain high enough to keep confidence too low to mention. Any fog will be fairly brief.

IND WATCHES/WARNINGS/ADVISORIES. None.

Short Term . White Long Term . AM Aviation . White


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bloomington, Monroe County Airport, IN18 mi74 minESE 11 G 2010.00 miOvercast53°F50°F89%997.7 hPa

Link to 5 minute data for KBMG

Wind History from BMG (wind in knots)
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Last 24hrSE6E4E3SE5E7E7E10
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1 day agoN5000000000000E5E5SE3E7SE10E11SE8E9SE7SE7SE9
2 days agoNW11
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NW6NW733N5NW3NW4N4N7N8N8N7N80N4--

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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