Marine Weather and Tides
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:30AM||Sunset 5:01PM||Sunday December 15, 2019 5:03 PM CST (23:03 UTC)||Moonrise 8:43PM||Moonset 10:38AM||Illumination 82%|
7 Day Forecast for Marine Location Near Lawrence, KSHourly EDIT Help
Area Discussion for - Topeka, KS  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KTOP 152146 AFDTOP
Area Forecast Discussion National Weather Service Topeka KS 346 PM CST Sun Dec 15 2019
SHORT TERM. (This evening through Monday night) Issued at 340 PM CST Sun Dec 15 2019
Snowfall should gradually end from west to east late this afternoon and evening as isentropic upglide and frontogenetical lift cease with increasing northerly flow through the column. Current radar trends still show elevated CSI being realized as banded snow from Dickinson to Jackson counties. These bands should decay from west to east with the loss of forcing. CAM guidance and short-term trends are in very good agreement in the snow coming to an end across the entire area by 9pm, which is the end time for both the northern Winter Weather Advisory and the Winter Storm Warning. Overall snow amounts have been coming in at around 3 to 6 inches, with localized amounts over 8 inches being reported as well.
A brief lull in the snowfall will continue for most of the overnight hours with subsidence occurring until the second round begins in east central KS a few hours before sunrise. This next batch comes ahead of the main trough axis swinging through western KS, and the CVA associated with this wave looks to be the main driver of this phase of the event as the baroclinic zone pushes south and east of the area, taking the frontogenetical forcing with it. Any cloud ice that would be lost this evening should be a non-issue for Monday due to the DGZ re-saturating once we get forcing for vertical motion in the morning. As such, have kept all snow through the day with the highest chances along and south of a line from Topeka to Council Grove. Models still vary slightly as to how far north we'll see any snow, so it's possible Topeka stays dry completely. Regardless, the northern half of the CWA should avoid this round of snow with east central KS expected to see it taper off in the evening as lift and saturation both decrease. Additional accumulations look to be another inch or two with potentially some locally higher amounts as the 18Z HRRR has hinted at some more narrow bands developing tomorrow.
Have trended high temperatures a bit cooler in eastern KS for tomorrow, in part because of the CAA regime expected to dominate the period, and also to account for the new snow pack in east central KS in particular. Most areas are forecast to stay in the upper 20s with north central KS reaching the low 30s, where snow amounts have been lower. With clouds clearing overnight after the system moves out, lows are forecast to drop to the teens area- wide.
LONG TERM. (Tuesday through Sunday) Issued at 340 PM CST Sun Dec 15 2019
Dry weather is expected for the rest of the week as ridging builds in behind the Monday system. Another mid-level trough does look to deepen to our west on Thursday and pass south of the area on Friday, but precipitation is forecast to remain south at this time with our only impacts being increased cloud cover and breezy southerly winds. Temperatures are still dependent on snow pack and how quickly it melts under sunny skies, especially on Tuesday, but a general warming trend is expected late in the week with WAA returning late Wednesday into Thursday. If this trend verifies, more seasonal temperatures in the 40s would return for the second half of the week, if not slightly above average.
AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 1139 AM CST Sun Dec 15 2019
Widespread LIFR to IFR snow gradually ends from west to east over the course of the afternoon and evening today, with MVFR to IFR stratus lingering through the overnight hours. Pockets of light freezing rain are possible southeast of a KEMP to KLWC line this afternoon. A second round of snow will impact areas mainly east of a KMPR to KSTJ line on Monday, producing MVFR to IFR restrictions as well. Winds will be light from the north to northeast through the TAF period.
TOP WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory until 9 PM CST this evening for KSZ009>012-021-034.
Winter Weather Advisory until 6 PM CST Monday for KSZ040-054>056- 058-059.
Winter Weather Advisory from 3 AM to 6 PM CST Monday for KSZ022>024-026-035>039.
Winter Storm Warning until 9 PM CST this evening for KSZ022>024- 026-035>039.
SHORT TERM . Picha/Skow LONG TERM . Picha AVIATION . Skow
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Lawrence, Lawrence Municipal Airport, KS||9 mi||71 min||NNE 6||1.75 mi||Light Snow Fog/Mist||26°F||21°F||84%||1016.3 hPa|
|Topeka, Forbes Field, KS||18 mi||70 min||N 8||0.75 mi||Light Snow Fog/Mist||26°F||21°F||84%||1016.2 hPa|
|Topeka, Philip Billard Municipal Airport, KS||18 mi||70 min||N 6||1.25 mi||Light Snow Fog/Mist||25°F||21°F||85%||1016.9 hPa|
Link to 5 minute data for KLWC
Wind History from LWC (wind in knots)
|1 day ago||E||Calm||Calm||NW|
|2 days ago||S||Calm||E||SE||E||E||E||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||SE||Calm||SE||Calm||SE||S||S||SW||SE |
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GEOS 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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Topeka, KS (18,4,5,8)(on/off)  Help
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