Winchester, MO Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Winchester, MO

June 16, 2024 5:20 PM CDT (22:20 UTC) Change Location
Sunrise 5:35 AM   Sunset 8:30 PM
Moonrise 2:25 PM   Moonset 1:03 AM 
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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.

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7 Day Forecast for Marine Location Near Winchester, MO
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Area Discussion for - St. Louis, MO
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Area Forecast Discussion National Weather Service Saint Louis MO 206 PM CDT Sun Jun 16 2024


- Temperatures will remain above normal into next weekend with the high temperatures mainly in the 90s. Heat index values on Monday will range from the mid 90s to around 100 degrees.

- There will be a chance (20 to 40%) of showers and thunderstorms each day through Wednesday and again next Sunday.

(Through Late Monday Night)
Issued at 205 PM CDT Sun Jun 16 2024

Temperatures have warmed into the 90s across the area this afternoon in south-southwesterly surface flow with dewpoints around 70. The combination of the temperature and the humidity are causing heat indices to run in the mid 90s to around 100 degrees. Low temperatures the next two nights will be similar to this morning's with readings in the low-mid 70s. Highs tomorrow may be held back by a few degrees, particularly over the southern CWA as the HRRR is showing increasing mid-high clouds moving in from the south.
Dewpoints will be similar tomorrow as they are today, so heat index values will range from the middle 90s to around 100 degrees.

A MCV has moved just north of our area with a well developed cumulus field to its south across Missouri. There may be a short window for an isolated shower or thunderstorm to develop in the uncapped 1500- 2500 J/kg MLCAPE over our area this afternoon over central and southeast Missouri. A better chance (20-30%) for scattered showers and thunderstorms will be on Monday when the NAM/GFS are showing a weak vort max moving north through the area in the increased moist flow.


(Tuesday through Next Sunday)
Issued at 205 PM CDT Sun Jun 16 2024

There continues to be reasonable agreement between the global models that there will be a steady flow of Gulf moisture into the area on the back side of the upper high over the East Coast. This will bring chances (20-30%) of mainly daytime showers and thunderstorms over the area on Tuesday and Wednesday. These chances will decrease as the model guidance has been consistent in showing an upper high retrograding back into the area Thursday into Saturday. Chances will increase again by late next weekend as an upper trough and attendant front will move through the Midwest, albeit with different timing. The LREF currently brings this system through next Sunday which will increase the chances (30-40%) for showers and thunderstorms.

Temperatures on Tuesday and Wednesday will not be as warm with the expected rain chances and increased cloud cover, but temperatures later in the week are expected to climb back into the mid-upper 90s as the upper high moves back over the region. Dewpoints are expected to remain in the 60s which are forecast to keep maximum afternoon heat indices around 100 degrees. Temperatures will be slightly lower on Sunday with the front moving into the area.


(For the 18z TAFs through 18z Monday Afternoon)
Issued at 1210 PM CDT Sun Jun 16 2024

Dry and VFR conditions are expected through the period. South to southwest winds will gust up to 20 knots this afternoon before decreasing this evening.


Issued at 328 AM CDT Sat Jun 15 2024

Daily High Temperature Records: |=== June 16 ==|=== June 17 ==| St. Louis (KSTL) | 100 F (1952) | 99 F (1944) | Columbia (KCOU) | 99 F (2006) | 100 F (1936) | Quincy (KUIN) | 102 F (1936) | 103 F (1918) |


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