Marine Weather and Tide Forecast for Boston, KY
April 20, 2025 10:21 PM EDT (02:21 UTC) Change Location
 | Sunrise 6:59 AM Sunset 8:25 PM Moonrise 1:54 AM Moonset 11:16 AM |
7 Day Forecast for Marine Location Near Boston, KY
NEW! Add second zone forecast
FXUS63 KLMK 210017 AFDLMK
Area Forecast Discussion National Weather Service Louisville KY 817 PM EDT Sun Apr 20 2025
Updated Aviation Discussion
KEY MESSAGES
* Gusty showers and storms expected late tonight into Monday morning, severe threat is very low.
* Dry and seasonable Tuesday and Wednesday before rain chances return later in the week.
* Several rounds of showers and storms look possible by late week into the weekend. Locally heavy rainfall will be the main threat.
SHORT TERM /THROUGH MONDAY/
Issued at 318 PM EDT Sun Apr 20 2025
Sfc boundary has lifted north as a warm front putting our CWA in the warm sector. Temperatures are in the mainly in the low 80s, dew points in the low 60s and southerly winds. While we will have the warmth and moisture, ACAR soundings as well as model soundings show a good subsidence layer at around 700mb. This will prevent any convective initiation this afternoon. Some of the CAMs have advertised a weak vort max working across mainly northern KY and southern IN later this evening that could spark an isolated shower or storm. Decided to introduce low end PoP for after 00z to account for this feature.
Cold front will approach from the west later tonight, strong LLJ will work along the boundary but the best dynamics will lift northward into central IN. A decaying, broken line of showers and storms will approach from the west and arrive just about day break tomorrow morning. While there will be ample amounts of sheer, instability will be lacking due to the early morning timing. While there appears to be little to no severe threat, can't rule out some gusty winds with any stronger showers or storms.
Cold front will swing through during the morning and push east and be into eastern KY by the afternoon. Highs will be in low/mid 70s with winds shifting from the south to more westerly late in the day.
It will also be breezy with gusts of 20-25 mph.
LONG TERM /MONDAY NIGHT THROUGH SUNDAY/
Issued at 318 PM EDT Sun Apr 20 2025
Monday night - Wednesday...
Surface high pressure builds in behind the departing cold front on Monday night, meanwhile the upper pattern takes on a more zonal flow with no notable features embedded within. The frontal boundary looks to stay stalled just to our south through mid week, which should keep us mostly, if not completely, dry. The one caveat to that could be a few diurnally driven showers or storms along the KY/TN border Tuesday or Wednesday PM closer to the stalled frontal boundary.
Temperatures during this stretch will run above normal with mid and upper 70s by Tuesday and upper 70s to low 80s by Wednesday under partly/mostly sunny skies. Lows each night look to run in the 50s.
Wednesday Night - Saturday Night...
A more active stretch of weather is expected for late week into the weekend as periods of showers and thunderstorms look like a good bet. Looks to be a fairly complex setup as several factors will come into play to kick off waves of convection. First off, the stalled frontal boundary mentioned above will start to lift back northward into our area by Thursday and Friday ahead of a southern Plains disturbance and its associated surface low. Should have plenty of Gulf moisture pooled along this boundary, so some slower moving storms could create locally heavy rain. In addition to the shortwave that it set to move through by later Friday into Friday night, there will also be a cold front trailing from an eastern Canada surface low that is expected to move through on Saturday. As a result of all of these triggering features, and plentiful deep moisture to accompany, we could easily see 3 or more wave of convection during this stretch. Forecast soundings each afternoon and evening between Thursday and Saturday take on a tall/skinny profile with PWATs ranging between 1.25" to 1.5" through the column. This would put that amount of deep moisture above the 90th percentile for late April. Deep layer shear only looks to be about 15 to 25kts during this time as well, so slow movement could contribute to some rainfall totals adding up, especially in areas that see repeated showers and storms. Overall basin average QPF values aren't particularly concerning at the moment, but do think some localized higher amounts may eventually start to show up once we get into the hi-res and LPMM ranges later this week. Something to keep in mind for some localized flooding potential.
Sunday...
Most of the data has us returning to dry conditions by Sunday with high pressure building back in behind the departing cold front. Not all that high of confidence at the moment given the complexity/timing of the several waves we have to get through ahead of it, but nevertheless some optimism toward the end of this forecast cycle.
AVIATION /00Z TAFS THROUGH 06Z TUESDAY/
Issued at 817 PM EDT Sun Apr 20 2025
Gusty winds will continue out of the south with some variability before a cold front brings a north to south oriented line of showers and thunderstorms east through the region early tomorrow morning.
Don't believe visibilities will be impacted too hard, but ceilings could drop to fuel alternate MVFR levels on the back side of the precipitation. Ceiling are expected to improve during the day tomorrow with improvements working from the northwest to southeast.
LMK WATCHES/WARNINGS/ADVISORIES
KY...None.
IN...None.
Area Forecast Discussion National Weather Service Louisville KY 817 PM EDT Sun Apr 20 2025
Updated Aviation Discussion
KEY MESSAGES
* Gusty showers and storms expected late tonight into Monday morning, severe threat is very low.
* Dry and seasonable Tuesday and Wednesday before rain chances return later in the week.
* Several rounds of showers and storms look possible by late week into the weekend. Locally heavy rainfall will be the main threat.
SHORT TERM /THROUGH MONDAY/
Issued at 318 PM EDT Sun Apr 20 2025
Sfc boundary has lifted north as a warm front putting our CWA in the warm sector. Temperatures are in the mainly in the low 80s, dew points in the low 60s and southerly winds. While we will have the warmth and moisture, ACAR soundings as well as model soundings show a good subsidence layer at around 700mb. This will prevent any convective initiation this afternoon. Some of the CAMs have advertised a weak vort max working across mainly northern KY and southern IN later this evening that could spark an isolated shower or storm. Decided to introduce low end PoP for after 00z to account for this feature.
Cold front will approach from the west later tonight, strong LLJ will work along the boundary but the best dynamics will lift northward into central IN. A decaying, broken line of showers and storms will approach from the west and arrive just about day break tomorrow morning. While there will be ample amounts of sheer, instability will be lacking due to the early morning timing. While there appears to be little to no severe threat, can't rule out some gusty winds with any stronger showers or storms.
Cold front will swing through during the morning and push east and be into eastern KY by the afternoon. Highs will be in low/mid 70s with winds shifting from the south to more westerly late in the day.
It will also be breezy with gusts of 20-25 mph.
LONG TERM /MONDAY NIGHT THROUGH SUNDAY/
Issued at 318 PM EDT Sun Apr 20 2025
Monday night - Wednesday...
Surface high pressure builds in behind the departing cold front on Monday night, meanwhile the upper pattern takes on a more zonal flow with no notable features embedded within. The frontal boundary looks to stay stalled just to our south through mid week, which should keep us mostly, if not completely, dry. The one caveat to that could be a few diurnally driven showers or storms along the KY/TN border Tuesday or Wednesday PM closer to the stalled frontal boundary.
Temperatures during this stretch will run above normal with mid and upper 70s by Tuesday and upper 70s to low 80s by Wednesday under partly/mostly sunny skies. Lows each night look to run in the 50s.
Wednesday Night - Saturday Night...
A more active stretch of weather is expected for late week into the weekend as periods of showers and thunderstorms look like a good bet. Looks to be a fairly complex setup as several factors will come into play to kick off waves of convection. First off, the stalled frontal boundary mentioned above will start to lift back northward into our area by Thursday and Friday ahead of a southern Plains disturbance and its associated surface low. Should have plenty of Gulf moisture pooled along this boundary, so some slower moving storms could create locally heavy rain. In addition to the shortwave that it set to move through by later Friday into Friday night, there will also be a cold front trailing from an eastern Canada surface low that is expected to move through on Saturday. As a result of all of these triggering features, and plentiful deep moisture to accompany, we could easily see 3 or more wave of convection during this stretch. Forecast soundings each afternoon and evening between Thursday and Saturday take on a tall/skinny profile with PWATs ranging between 1.25" to 1.5" through the column. This would put that amount of deep moisture above the 90th percentile for late April. Deep layer shear only looks to be about 15 to 25kts during this time as well, so slow movement could contribute to some rainfall totals adding up, especially in areas that see repeated showers and storms. Overall basin average QPF values aren't particularly concerning at the moment, but do think some localized higher amounts may eventually start to show up once we get into the hi-res and LPMM ranges later this week. Something to keep in mind for some localized flooding potential.
Sunday...
Most of the data has us returning to dry conditions by Sunday with high pressure building back in behind the departing cold front. Not all that high of confidence at the moment given the complexity/timing of the several waves we have to get through ahead of it, but nevertheless some optimism toward the end of this forecast cycle.
AVIATION /00Z TAFS THROUGH 06Z TUESDAY/
Issued at 817 PM EDT Sun Apr 20 2025
Gusty winds will continue out of the south with some variability before a cold front brings a north to south oriented line of showers and thunderstorms east through the region early tomorrow morning.
Don't believe visibilities will be impacted too hard, but ceilings could drop to fuel alternate MVFR levels on the back side of the precipitation. Ceiling are expected to improve during the day tomorrow with improvements working from the northwest to southeast.
LMK WATCHES/WARNINGS/ADVISORIES
KY...None.
IN...None.
Link to 1 hour of 5 minute data for KFTK
Terminal Aerodrome Forecast (TAF) for KFTK
Wind History Graph: FTK
(wind in knots)
GEOS Local Image of great lakes
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