Thursday, September23, 2021
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Marine Weather and Tides
Farnam, NE

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 7:30AMSunset 7:39PM Thursday September 23, 2021 1:48 PM CDT (18:48 UTC) Moonrise 8:09PMMoonset 9:03AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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 Farnam, NE
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location: 40.77, -100.3     debug


Area Discussion for - North Platte, NE
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FXUS63 KLBF 231715 AFDLBF

Area Forecast Discussion National Weather Service North Platte NE 1215 PM CDT Thu Sep 23 2021

SHORT TERM. (Today through Friday) Issued at 402 AM CDT Thu Sep 23 2021

The main forecast concerns to round out this week include a big swing in temperatures with a cool front passage and fire weather threats. Near critical fire weather is likely in the west today ahead of the front, then the area experiences another taste of fall tomorrow. Of course, temperatures rebound to summer-like levels again for the weekend.

Today . A surface low currently centered over the Black Hills slides into the Sandhills, dragging a pre-frontal trough as well as the main cool front through the forecast area. Modest warm air advection occurs out ahead of the front today under southerly low level flow. Temps at H85 approach 23C in the west, a good 2 to 3C higher than yesterday. The pre-frontal trough/dryline is progged to reach Hwy 83 by midday, which keeps dew points in the 30s with the help of downsloping west winds. When combined with air temps in the 80s and full sunshine, humidity values drop to around critical levels in the southern panhandle and far southwest Nebraska. To the east, continued southerly flow and slight moisture advection pushes dew points into the mid/upper 40s. Luckily, mid-level flow is relatively weak with this system and is capped at around 30kts at H5. The surface trough also interrupts low level flow and keeps gusts generally less than 20mph. Some slightly higher wind gusts are possible near the true cool front in the northern panhandle toward late afternoon. Red flag conditions could be realized on a limited temporal or spatial scale in far western Nebraska. However, the threat of sustained critical conditions is low, precluding any headline with this forecast package.

This evening and tonight . The cool front is progged to cross Hwy 83 around 00z, then stretch along the eastern CWA boundary around 06z. Despite decent forcing with the front, the low and mid levels continue to be moisture starved into the overnight hours. Some better moisture streams into the area in the upper levels, resulting in increased cloud cover. In the meantime, mostly clear skies and relaxing surface winds should allow for efficient boundary layer decoupling. When coupled with the beginning of cool air advection, sided with the cool end of guidance for min temps. Forecast ranges from the mid 40s along the Pine Ridge to the lower 50s in central Neb.

Friday . Surface high pressure drops onto the northern High Plains through the day while the cool front pushes into Kansas. In the mid levels, a stout shortwave cuts across the Upper Midwest. The bulk of the fgen forcing and moisture remains north/northeast of the forecast area, but north central Neb may still feel some effects from the wave. Soundings suggest a period of better moisture reaching as low as H75 during the late morning and early afternoon. Forcing is negligible below H75 with high pressure nearby, but lapse rates will be nearly dry adiabatic. Can't rule out a quick passing rain shower or a batch of sprinkles. Left forecast dry for now as the chance for appreciable moisture is low. Temperature-wise, a core of cold air aloft associated with the upper trough and shortwave brushes the northern reaches of Nebraska. Holt/Boyd Co area will struggle to surpass 10C at H85 in the afternoon, translating to highs in the upper 60s. Farther southwest where the cool air is just a glancing blow and H85 temps hold near 17C, mid 70s are expected.

LONG TERM. (Friday night through Wednesday) Issued at 402 AM CDT Thu Sep 23 2021

Saturday and beyond . A broad upper ridge over the Western US expands onto the Plains and amplifies. NAEFS ensembles suggest H85-7 temps at the 90%ile to start the week, and a surface warm front lifts north on Sunday. The current forecast lists 90F at KLBF, while normal highs are in the mid/upper 70s and the daily record is 93F. The ridge axis bisects the Great Plains on Tuesday, leading to a somewhat sustained warmup, especially for late September. Discrepancies among the long range guidance grow fairly large for mid next week, but the overall pattern appears to be hinting at a return to near normal temps and a better chance of moisture. Depending on timing/placement of a cool front and perhaps an upper closed low, potential exists for a wetting moisture toward late next week.

AVIATION. (For the 18Z TAFS through 18Z Friday afternoon) Issued at 1214 PM CDT Thu Sep 23 2021

VFR flight conditions are expected over the next 24 hours at both terminals. Some scattered high clouds around 25000 FT AGL are possible into the overnight hours. By Friday morning skies will become mostly cloudy with broken ceilings of 12000 to 15000 FT AGL. Winds will be from the west or northwest at around 10 KTS over the next 24 hrs.

LBF WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . Snively LONG TERM . Snively AVIATION . Buttler


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lexington, Jim Kelly Field Airport, NE28 mi53 minSSE 510.00 miFair76°F46°F34%1014.9 hPa

Link to 5 minute data for KLXN

Wind History from LXN (wind in knots)
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1 day agoN10NW12NW10NW9N4N4N4CalmCalmW3N3CalmW3W4CalmCalmCalmCalmCalmCalmCalmSW6SW14
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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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