Friday, July21, 2017

Marine Weather and Tides
Hendley, NE

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:22AMSunset 9:03PM Friday July 21, 2017 5:48 PM CDT (22:48 UTC) Moonrise 3:39AMMoonset 6:31PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 Hendley, NE
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location: 40, -100     debug

Area Discussion for - Hastings, NE
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Fxus63 kgid 212105
area forecast discussion
national weather service hastings ne
405 pm cdt Fri jul 21 2017

Short term (this evening through Saturday night)
issued at 400 pm cdt Fri jul 21 2017
dry, hot conditions continue across the area this afternoon, with
the dome of upper level high pressure remaining centered over
portions of the south central southeastern conus. At the surface, a
trough axis extends from west-central ks northeastward into
northeastern ne. This boundary is clipping far northwestern portions
of the cwa, with light variable to calm winds. Across the remainder
of the cwa, winds have been south-southwesterly, helping mix out
dewpoints for mainly nc ks into the 50s and temperatures to around
105 deg. Closer to along the boundary, dewpoints are higher, into
the mid 70s for some, with temps in the lower mid 90s. Just another
miserable day as heat index values for most are around 105 deg.

Through the rest of this afternoon and into this evening, outside of
the heat, the main concern lies with thunderstorm chances. The
surface boundary across the northwestern areas looks to provide a
focus for development. Forcing aloft is pretty weak, and there is
plenty of warm air aloft capping, but with peak heating of the day,
models are in pretty good agreement showing at least
isolated scattered activity developing. Strong severe storms remain
a concern, with portions of the CWA remaining in the SPC day 1
marginal risk area. Instability certainly not an issue, but deep
layer shear is low, will keep the mention on marginally severe wx in
the hwo.

Overnight, have low pops continuing mainly across south central ne.

Models show the sfc low level boundary gradually sagging south,
along with lift on the northern edge of a 30-ish kt llj, so could
have scattered activity around much of the night. Any severe wx
threat should wane with time.

Looking at precip chances Sat sat night, the sfc cool frontal
boundary continues working its way south, starting the day roughly
through the heart of the cwa. Strong severe thunderstorms will again
be a concern, mainly across the southern half of the CWA during the
late afternoon and into the evening hours. Upper level forcing
continues to be on the weak side, but shear is a bit better. Will
keep ping pong balls 60mph going in the hwo.

Along with helping drive thunderstorm chances tomorrow, this frontal
boundary is making the temperature forecast a bit of a headache.

Yes, forecast high temperatures are expected to be cooler than the
past several days, but still looking at highs in the 90s, perhaps
100 in far southern areas. Will be dependent on the speed of the
front pushing south and the magnitude of mixing out ahead into the
hottest air aloft. Along south of the front, will likely see
moisture dewpoints pooling, keeping the muggy conditions around.

Decided to keep heat headlines going across the far southeastern
portions of the cwa, where current forecast has heat index values
hitting 100-105, though it may only be briefly. Thought about
letting today's headline expire this evening and let the mid crew
reassess, but the southeast isn't going to have notable relief
overnight, and since we have had headlines going the past several
days, felt it would be best to just continue the headline right on
through tomorrow.

Long term (Sunday through Friday)
issued at 400 pm cdt Fri jul 21 2017
hard to have a lot of confidence in any specific details of the long
term period.

On Sunday, may start the day with a few lingering storms across far
south, but otherwise the rest of the day is currently dry. More
northwesterly flow is expected to return in the upper levels, with
the main area of high pressure ridge axis back off to our west. Not
a lot of change in that as we get into Monday, but toward mid-week,
a more notable trough moving toward the west coast looks to push the
main ridge axis east, back onto the plains. Through the long term,
any periodic precipitation chances would be tied to disturbances
sliding around the edge of the ridge, and confidence in timing or
location is not high at all.

As far as temperatures go, no reason to deviate from the model blend
with plenty of uncertainty, with forecast highs generally in the
upper 80s to mid 90s.

Aviation (for the 18z kgri kear tafs through 18z Saturday)
issued at 1209 pm cdt Fri jul 21 2017
vfr conditions are forecast for this TAF period. A surface trough
axis currently lies from far western ks northeastward through
north central ne. Winds at both terminals are forecast to remain
southwesterly this afternoon, with kgri having more potential for
occasional gusts near 20 mph. More light variable winds are
expected to develop this evening overnight, between the boundary
sinking south and potential impacts from area thunderstorms. Do
have a vcts mention at both sites this evening, but confidence in
any timing, or if they will even affect the terminals, is pretty
low. Once the boundary sinks south early tomorrow morning, winds
through the end of the period are expected to turn more

Gid watches warnings advisories
Ne... Excessive heat warning until 8 pm cdt this evening for nez064-

Heat advisory until 8 pm cdt this evening for nez039>041-046>049-

Heat advisory from 8 pm this evening to 7 pm cdt Saturday for

Ks... Excessive heat warning until 8 pm cdt this evening for ksz006.

Heat advisory until 8 pm cdt this evening for ksz005.

Heat advisory from 8 pm this evening to 7 pm cdt Saturday for

Excessive heat warning until 7 pm cdt Saturday for ksz007-018-

Heat advisory until 7 pm cdt Saturday for ksz017.

Short term... Adp
long term... Adp
aviation... Adp

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
McCook, McCook Municipal Airport, NE35 mi55 minS 11 G 1710.00 miFair98°F62°F31%1006.7 hPa

Wind History from MCK (wind in knots)
Last 24hrS13
1 day agoS14
2 days agoE8E11NE9NE6NE6E3NE5N8NE5NE4E3NE5NE3E4E4SE3CalmS7S5SW12SW16SW16

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of CentralPlains    EDIT

Wind Forecast for Hastings, NE (18,4,5,8)
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Ground Weather Radar Station Grand Island, NE
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.