Wednesday, September 30th 2009 Weather Outlook

29 09 2009

Wednesday’s Weather Outlook; West/Plains System

11:30PM

On Wednesday, a system will continue to push through the West, towards the Plains. Showers and storms iwll be likely over portions of the Inter-Mountain West and Plains, assocaited witht he system pushing through. A few storms may become severe in portions of Colorado, Nebraska, Kansas, Oklahoma, Texas, Iowa and Missouri. As Cape values will be arond 1000-2000 J/KG, LI’s up to -5 and EffectiveBulk shear values up to 70KT. As the main disturbance moves in from the West, storms will develop during the late afternoon and Evening once the cap breaks. These storms will likely continue to push eastward into the Night. The strong Cap in place will hinder development, which will preclude a slight risk form being issued. The main threats from any storms that become severe will be damaging winds, hail and an isolated tornado. On the backside of the system, snow will be likely in the higher elevations of the Rockies in the Inter-Mountain West. Accumulations are likely. Below are the thunderstorm and snowfall outlooks for Wednesday.

sev 666

snow 5





Tuesday, September 29th 2009 Weather Outlook

28 09 2009

Tuesday’s Weather Outlook; Great Lakes/Northeast System, West System

10:00PM

On Tuesday, a system will push through Southern Canada, while a system pushes through the West. Showers will be likely in portions of the Northwest and Great Lakes as a system pushes through Southern Canada. High winds will be possible associated with srong wind fields with this system. Cool temeratures will continue to be seen across much of the Central and Eastern part of the country. In the west, a system will continue to push throgh the area. Showers and storms will be likely in portions of the West. Snow will be likely in higher elevations of the Rockies. Accumulations will be likely expecially Tuesday Night. Below are the thunderstorm and snowfall outlooks for Tuesday.

sev 664

snow 4





Monday, September 28th 2009 Weather Outlook

27 09 2009

Monday’s Weather Outlook; Great Lakes/Northeast/Mid-Atlantic/Southeast System, Norhtwest System

11:30PM

On Monday, a system will push through the Great Lakes, while a new system enters the Northwest. Showers and storms will be likely over portions of the Great Lakes, Northeast, Mid-Atlantic and Southeast, assocaited with a system pushing through the Great Lakes. A few storms may become sever ein portions of the Eastern Great Lakes, Northeast, Mid-Atlantic and Southeast. As CAPE values will be around 250-1000 J/Kg, LI’s up to -5 and Effective Bulk Shear values up to 70KT. The lack of instibility will limit the overall severe threat and coverage. The main threats from any storms that become severe, will be damaging winds, hail and an isolated tornado. High winds will be likely with this system over portions of the Great Lakes, Ohio Valley and Northeast, as strong wind fields will move through with this strong early fall system. Unseasonably cool temperatures will push in behind this system. In the Northwest, Showers and some storms will push into the area late in the day, as a new system pushes onshore. Below is the thunderstorm outlook for Monday.

sev 663





Sunday, September 27th 2009 Weather Outlook

27 09 2009

Sunday’s Weather Outlook; Northeast/Mid-Atlantic/Southeast System, Midwest/Great Lakes/Ohio Valley System

12:00PM

On Sunday, a system will push through the Northeast, as a system pushes through the Midwest. Showers and storm siwll be likely in portions of the Norhteast, Mid-Atlantic and Southeast, as a system pushes through the area. Showers and storms will be likel yin portions of the Midwest, Great Lakes and Ohio Valley, as a system pushes through the Midwest. Some storms may become severe, as CAPE values will be around 1000 J/KG, LI’s up to -5 and Effective Bulk Sehar values up to 55Kt. The lack of instibility and moisture will limit the overall severe threat and coverage. The main threats from any storms that become severe will be hail, damaging winds and an isolated tornado. High winds will be possible ahead of and on the backside of this system as high wind fields move will be assocaited with this strong early fall system. Unseasonably cool temperatures will work in behind this system also. Below is the thunderstorm outlook for Sunday.

sev 662





Saturday, September 26th 2009 Weather Outlook

25 09 2009

Saturday’s Weather Outlook; Great Lakes/Mississippi Valley/Ohio Valley/Southeast/Northeast System, Northern Plains/Northern Midwest System

11:45PM

On Saturday, a system will continue to push eastward through the middle Mississippi Valley. Showers and sotrms will be likely over portions of the Great Lakes, Mississippi Valley, Ohio Valley, Southeast, Mid-Atlantic and Northeast, as a system pushes through the Mississippi Valley. Due to the high moisture content, heavy rainfall will be possible in some areas. A few storms may become severe during th eafternoona nd Evening,a cross portions of the Ohio valley and Southeast. As CAPE values will be around 1500 J/KG, LI’s of -4 and effective Bulk shear values of 25-55KT. The lack of instibility will limit the overall severe threat and coverage. The main threats from any storms that become severe, will be damaging winds, hail and an isolated tornado. Showers and a few storms will be possible Saturday Night in portions of the Northern Plains and Northern Midwest, as a system pushes southeast into the area from Southern Canada. Strong winds will also be possible, as this will be a strong low pressure system. Below is the thunderstorm outlook for Saturday.

sev 661





Friday, September 25th 2009 Weather Outlook

24 09 2009

Friday’s Weather Outlook; Plains/Midwest/Great Lakes/Ohio Valley/Southeast System

11:30PM

On Friday, a system will begin to push eastward across the Plains. Showers and storms will be likely in portions of the Plains, Midwest, Great Lakes and Southeast, assocaited with this system. Heavy rainfall will be possible in some areas due to the high moisture content. A few storms may become severe during th eafternoona nd Evening,a cross portions of the central Plains. As CAPE values will be around 1500 J/KG, LI’s of -4 and effective Bulk shear values of 25-55KT. The lack of instibility will limit the overall severe threat and coverage. The main threats from any storms that become severe, will be damaging winds, hail and an isolated tornado. Below is the thunderstorm outlook for Friday.

sev 660





Thursday, September 24th 2009 Weather Outlook

23 09 2009

Thursday’s Weather Outlook; Plains/Midwest/Ohio Valley/Southeast/Mid-Atlantic/Mississippi Valley System

11:15PM

On thursday, a system will continue to sit in the Central Plains. Showers and storms will be likely in portions of the Plains, Midwest, Mississippi Valley, Ohio Valley, Southeast and Mid-Atlantic, associated with this system. On the backside of the system snow will be possible along the front range of the Rockies in the higher elevations in portions of Colorado, as an upsloap flow will be in place. Light accumulations are possible. Below is the thunderstorm outlook for Thursday.

sev 658