Marine Forecasts

    EDIT      (on/off)   Help

---

7 Day Forecast for Marine Location Near Howard, WI

   Hourly   EDIT   Help

---

Area Discussion for - Green Bay, WI

      (on/off)   Help   NOTE: mouseover dotted underlined text for definition

Fxus63 kgrb 172305 afdgrb area forecast discussion national weather service green bay wi 505 pm cst Sat nov 17 2018 updated aviation portion for 00z TAF issuance Synopsis Issued at 211 pm cst Sat nov 17 2018 remaining rather cold through thanksgiving day, then temperatures warming to above normal for the remainder of the holiday weekend. The persistent, broad, deep longwave trough that has been across the area will remain in place a little longer, though a transition to a more progressive pattern is already beginning out in the pacific. The effects of the pattern change won't become apparent until after thanksgiving day, when the upstream ridge progresses into the area. There are some indications that the pattern change won't last long. Although there isn't great agreement among the medium range models, the overall trend seems to be for the mid-continent upper trough to return. Temperatures will remain below normal through thanksgiving day, then warm to above normal levels as the flow flattens. There will be a few opportunities for precipitation, but none look significant. So totals will probably end up AOB for the period. Normal precipitation for a week at this time of year is a little less than one-half inch for most of the area. Short term Tonight and Sunday issued at 211 pm cst Sat nov 17 2018 the latest rap analysis and satellite radar imagery show arctic high pressure building southeast across the northern plains and into the western great lakes. Cold advection continues on the eastern periphery of the high thanks to northwest winds. The cold low level airmass with help from moisture fluxes off lake superior continue to generate broken strato-cu over north-central and northeast wi. Drier air is making progress across northwest wi, and should see some clearing occur late this afternoon from west to east. Forecast concerns generally revolve around sky cover and temps in the short term. Tonight... High pressure will continue to edge southeast tonight across the plains, but also nose into the western great lakes. Dry air with the incoming ridge axis will continue to spread east, and continue the trend of clearing skies. Eastern wi will be the last to clear, most likely by mid-evening. Will still have the northern edge of some cirrus pass over areas south of highway 29 overnight, but without much consequence. The pressure gradient will remain relatively tight tonight, so remained conservative with low temps despite skies becoming mostly clear. Lows ranging from the single digits over the northwoods to the upper teens near lake michigan. Sunday... The surface ridge axis will slide southeast into the

southern great lakes while a weak cold front drops south over lake superior. The northern branch of the jet stream will likely push some cirrus to the area through the day, but clouds along the front will most likely remain north of the region. With a breezy west to southwest wind, highs will range from the mid 20s in the north to the low 30s over the fox valley. Long term Sunday night through Saturday issued at 211 pm cst Sat nov 17 2018 a shortwave and surface trough front will drop southeast across the area Sunday night into Monday. A broad but rather weak area of qg forcing along with some fgen forcing will accompany the features through the region. The result should be a round of light snow, especially across the north. Lake-effect snow showers off lake superior will linger in the snowbelt as the system snows depart. The large scale flow will become progressive by the time the next shortwave digs southeast into the longwave trough position Tuesday Tuesday night. Given the rising upper heights, chance pops (mainly across the north northeast) seemed adequate to cover the situation for now. The upper changes will cause the next incoming anticyclone to pass north of the area. The resulting low-level easterly flow across lake michigan could lead to some flurries in the east early on thanksgiving day. The situation for the remainder of the forecast period is more muddled. Another precipitation event is possible late in the period as the remnants of the western ridge shift through the area and the upper flow tilts back to the southwest. But considerable uncertainty exists concerning the timing and track of the resulting weather system. But in any case, it does not appear likely to be a major storm. Other than to better resolve the lake-effect potential, no significant changes were necessary to the standard forecast initialization grids. Aviation For 00z TAF issuance issued at 500 pm cst Sat nov 17 2018 skies will continue to clear from north to south this evening as high pressure builds in across the western great lakes. Generally clear skies are expected until Sunday afternoon across the north and west when a low pressure system approaches lake superior. Despite the clouds, ceilings should beVFR throughout the taf period. Grb watches warnings advisories None. Synopsis... ... .Skowronski short term... ..Mpc long term... ... Skowronski aviation... ... .Kurimski

---

Weather Reporting Stations

   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
KWNW3 - 9087069- Kewaunee, WI	33 mi	42 min	NW 1.9 G 2.9	24°F			1026.7 hPa (+0.0)
MN4 - 9087088 - Menominee, MI	46 mi	42 min	W 2.9 G 6	24°F	40°F		1027.4 hPa (+0.0)	4°F

Wind History for Kewaunee MET, WI

(wind in knots)    EDIT      (on/off)   Help

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

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

Last 24hr

NW4 G8

NW6 G9

NW4

NW5

NW5 G8

N5 G9

NW3 G6

N7 G12

N7 G11

N9 G12

N7 G13

N7 G11

NW10 G13

NW8 G11

NW7

N6 G9

N5 G9

NW5 G8

NW3

N5 G8

NW4

NW3

NW2

NW2

1 day ago

S8

SW7

SW6

W5 G8

W7 G10

W4 G7

W3

W9 G13

W7 G10

W6 G11

W7 G10

W8 G11

W8 G16

W9 G14

W13 G20

W10 G17

W14 G20

W13 G19

W8 G15

W11 G17

NW4 G10

NW5 G11

NW6 G10

NW5 G11

2 days ago

S11

SW8 G11

SW4

W5

SW6 G9

W6

W4

W4

--

NW4

--

W2

S6

S14 G17

S10 G13

S11

S11

S12 G15

S15

S14 G20

SW10

S10

SW7 G11

SW7 G10

---

Airport Reports

    EDIT      (on/off)   Help   Click EDIT to display multiple airports

Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Green Bay, Austin Straubel International Airport, WI	6 mi	49 min	WNW 4	10.00 mi	Fair	24°F	18°F	77%	1029.1 hPa

Wind History from GRB (wind in knots)

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

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

Last 24hr

NW10

N8

N7

NW7

NW6

NW6

NW8

NW6

N6

N9

N7

NW10

N9

NW6

N5

NW6

NW6

NW8

NW6

N4

N3

W4

W4

W4

1 day ago

S9 G17

S7

SW7

SW5

S4

SW3

W9

W6

W8

W8

W8

W10

W9

W12 G19

W15 G23

NW12 G21

W13 G22

W14

NW12 G19

W10

NW10 G17

NW8

W6

NW9 G16

2 days ago

S7

S8

Calm

Calm

S5

Calm

Calm

Calm

Calm

Calm

S3

S6

S8

SW8

S9

S8

SW8

S9

S5

SE7

S7

S7

S8

S7

---

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)   HelpWeather Map

GOES 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

---

Wind Forecast for Green Bay, WI (22,6,7,8)

      (on/off)   Help

---

Ground Weather Radar Station Green Bay, WI

   (on/off)   Help

---

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.