Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Bayfield, WI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:49AMSunset 7:36PM Wednesday March 29, 2017 2:13 PM CDT (19:13 UTC) Moonrise 6:57AMMoonset 8:36PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ147 /o.con.kdlh.ma.w.0045.000000t0000z-160919t0545z/ 1213 Am Cdt Mon Sep 19 2016
.a special marine warning remains in effect until 1245 am cdt... For the following areas... Lake superior west of a line from saxon harbor wi to grand portage mn beyond 5nm... Sand island to bayfield wi... At 1210 am cdt...doppler radar indicated severe Thunderstorms...capable of producing dangerous winds in excess of 50 knots and small hail... Located along a line extending from 15 nm southeast of mouth of the cross river...to 23 nm northeast of raspberry island...to near red cliff...moving northeast at 55 knots. SEvere Thunderstorms will remain over mainly open waters. Precautionary/preparedness actions... Mariners can expect gusty winds...high waves...dangerous lightning...and heavy rains. Boaters should seek safe harbor immediately until these storms pass. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible...keep away from ungrounded metal objects. && lat...lon 4703 9020 4689 9073 4723 9091 4768 8986 4760 8982 time...mot...loc 0512z 235deg 54kt 4734 9065 4727 9040 4691 9068
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ147 Expires:201609190545;;636279 FZUS73 KDLH 190513 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1213 AM CDT MON SEP 19 2016 LSZ147-162-190545-

7 Day Forecast for Marine Location Near Bayfield city, WI
   Hourly   EDIT   Help
location: 46.86, -90.85     debug


Area Discussion for - Duluth, MN
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdlh 291600
afddlh
area forecast discussion
national weather service duluth mn
1100 am cdt Wed mar 29 2017

Update
Issued at 1058 am cdt Wed mar 29 2017
updated to lower high temperatures a bit. With thick cloud cover,
temperatures have a slower start to warming.

Update issued at 935 am cdt Wed mar 29 2017
updated to include wording of much cooler temperatures near lake
superior. With brisk off-lake winds, temperatures will not rise
much beyond where they are currently at, in the mid 30s, today.

Short term (today through Thursday)
issued at 458 am cdt Wed mar 29 2017
increasing cloud cover with cooler temperatures are expected
today across the northland. A few showers may nose into our
southern wisconsin zones tonight and Wednesday, with a wintry mix
possible.

Split flow will continue across the upper midwest today and
Thursday. Surface high pressure over northern ontario and the
western great lakes this morning will shift farther eastward
today. A closed upper low will advance slowly eastward from the
texas panhandle this morning to the middle mississippi valley by
Thursday evening. Meanwhile a progressive, and weaker shortwave
trough will dig across the canadian prairies and upper midwest,
moving into northern ontario by Thursday evening. Being between
these upper- level features will keep conditions fairly quiet
across the northland during the period. Mid- and upper-level
stratus will spread across the area this morning and linger
through Thursday afternoon resulting in partly to mostly cloudy
skies across the area. Temperatures will trend a little cooler due
to the cloud cover. With the surface ridge shifting eastward, and
low pressure approaching from the west and southwest, winds will
be strong at the head of the lake and for portions of iron and
ashland counties. The winds will be strongest along the north
shore where the pressure gradient is expected to increase sharply.

Highs today will be in the middle 50s west to around 50 degrees
southeast, with upper 40s along the lake superior shore and in the
arrowhead.

Skies may clear for central portions of the forecast area, while
overcast skies are favored southeast and portions of the
northwest. Temperatures will remain elevated overnight due to the
cloud cover with lows in the middle 20s to low 30s. Most models
bring a slight chance of showers into our southern wisconsin
zones, generally south of wisconsin state highway 70 from spooner
to winter to park falls. Temperature profiles would suggest a mix
of rain, freezing rain, or snow. Do not expect noteworthy
accumulations of snow or ice as of this forecast package, but a
few secondary roads may be slippery for the Thursday morning
commute. The chance for precipitation shifts eastward during the
day and kept pops limited to price county after 12z. Skies will
gradually clear across the north on Thursday as the northern
stream trough shifts east of the northland. Temperatures will
climb into the low 50s west with 40s over the remainder of the
area.

Long term (Thursday night through Tuesday)
issued at 458 am cdt Wed mar 29 2017
latest guidance continues the trend of a fairly quiet long-term
forecast period. Thursday night/Friday morning looks to be dry
across most, if not all, of the northland. A closed area of low
pressure is being progged to advance through the mid mississippi
river valley region during this time. The 29.00z GFS wants to
bring QPF as far north as sawyer, ashland, and iron counties in nw
wi, but the cmc/nam models keep this area dry. Consensus blends
continue the dry forecast that was inherited, so will keep this
trend going. Northeast flow due to the proximity of this low will
keep temperatures a bit cooler during the day Friday along lake
superior.

A mid-level shortwave trough is then progged to dive southeast
across the region during the day Saturday, which looks to bring
chances of precipitation with it. However, there is some
uncertainty regarding the spatial extent of the precipitation as
the gfs/ecmwf/cmc models disagree on how far south precipitation
reaches. The GFS soundings show a brief period of deeper moisture
developing before drying above the 800 mb level. Consensus blends
have cut back on pops quite a bit from the previous forecast,
which seems reasonable due to this uncertainty. Best chances look
to be along the international border and iron range regions
through Saturday.

Sunday looks dry and very warm due to southerly return flow from
sfc high pressure. High temperatures Sunday look to reach into the
50s for all locations except for the tip of the mn arrowhead.

Then, chances of precipitation linger from Monday morning through
Wednesday as another system makes its way into the region.

Uncertainty in the spatial extent does exist between the
gfs/cmc/ecwmf models at this time, so only kept chance pops for
now. High temperatures in the upper 40s and into the 50s should
continue through the period.

Aviation (for the 12z tafs through 12z Thursday morning)
issued at 626 am cdt Wed mar 29 2017
high cirrus clouds will continue to build into the region today,
with some sct to bkn cloud decks possible. The band of stratus
that developed this morning near the head of lake superior
remained nearly stationary despite winds having a slight westerly
component. Not confident that it will propagate to the north over
the dlh TAF site. So, decided to remove the bkn008 tempo group
for dlh.

As an area of low pressure approaches the region from the south,
expect a low-level stratus deck to develop, with ceilings between
1 to 5 kft for all TAF sites except for inl. Dlh and hib are
expected to see MVFR cigs, while the other sites look to remain
vfr through the TAF period. Some MVFR fog looks to develop over
dlh tonight as well as a low-level inversion develops, which should
help to trap boundary layer moisture near the surface.

Preliminary point temps/pops
Dlh 43 29 45 29 / 0 0 0 0
inl 52 30 51 29 / 0 0 0 0
brd 52 31 51 30 / 0 0 0 0
hyr 48 32 47 28 / 0 10 10 0
asx 45 28 44 28 / 0 0 10 0

Dlh watches/warnings/advisories
Wi... None.

Mn... None.

Ls... Small craft advisory until 10 pm cdt this evening for lsz142>145.

Update... Clc
short term... Huyck
long term... Jts
aviation... Jts


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DISW3 - Devils Island, WI 16 mi74 min ENE 13 G 16 34°F 1028.3 hPa (+0.0)31°F
PNGW3 - Port Wing, WI 29 mi34 min NE 16 G 20 35°F 1026.4 hPa
SXHW3 - Saxon Harbor, WI 30 mi34 min NW 4.1 G 5.1 35°F 1026.1 hPa
SLVM5 - Silver Bay, MN 36 mi34 min ENE 15 G 24 36°F 1027.1 hPa

Wind History for Duluth, MN
(wind in knots)    EDIT      (on/off)   Help
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
NE3
NE4
G7
NE3
NE3
NE9
G14
NE6
E2
G6
E3
NE4
NE6
G9
NE5
G8
NE12
G19
NE14
G22
NE14
G18
NE12
G18
NE11
G19
NE12
G21
NE14
G19
NE15
G21
NE12
G20
NE8
G18
NE14
G20
NE13
G22
NE15
G20
1 day
ago
E2
NE2
NE2
G5
NE4
NE3
NE3
--
--
NE4
--
SW1
S3
SW3
SW3
SW3
--
SW2
SW3
S1
E1
NE3
NE4
NE5
2 days
ago
NE7
G10
NE4
G7
NE4
NE3
--
NE1
--
E1
N2
--
E1
W2
SW2
S2
SW2
SW2
SW1
SW3
SW2
SW4
S2
SW1
E1
E2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ashland, Kennedy Memorial Airport, WI22 mi81 minNNE 910.00 miFair39°F32°F76%1027.7 hPa

Wind History from ASX (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hr3N10N7N8N8N6N7N5N7NE6NE6N6N4N7NE6N6N3N4N5----N6N9N7
1 day agoN7N8N7N4N4CalmCalmCalmCalmCalmSW5SW4CalmCalmCalmSW3S3CalmS5Calm3NW3SE4--
2 days agoNE8N7NE6NE7NE6N5N5NE3CalmW3NW3CalmCalmCalmCalmCalmCalmCalmS4SW4NW43NE4N5

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Duluth, MN (15,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Duluth, MN
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
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 L-36.com. 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 L-36.com 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.