Blocking Signatures Affecting North America * Air Mass Designations And Terms Used In WEATHERAmerica Discussions A GUIDE TO BAROCLINIC DISTURBANCES AFFECTING NORTH AMERICA, Parts

:A GUIDE TO BAROCLINIC DISTURBANCES AFFECTING NORTH AMERICA, Part 3; Revised/Edited Thursday, November 4, 2021 * *Your Last And Best Chance For A Winter Storm, And Serious Cold, In

A GUIDE TO BAROCLINIC DISTURBANCES AFFECTING NORTH AMERICA; Introduction Foreword *One of the greatest challenges in forecasting is finding a way to quickly categorize and summarize

1978 Blizzard Affecting the northern Mid-Atlantic and New England states is an excellent example of the Miller "B" form of Nor'easter. 3) VORTICES AND SLOW-PROGRESS

then spread north-northeast before the low exits the coast over the Delmarva Peninsula. If cold air is present in New England or Quebec, changeover to frozen types may occur. The name

and transported north-northeastward, along or west of the spine of the Appalachian Mountains. Realm of very high dewpoints follows the storm, concentrated in the overrunning and

cold air affecting sections of the Midwest and/or Northeast. *Forecast Considerations for Great Lakes Backdoor Storms are:* 1) Advection of cA or cAk values from NU AR and N MB into

. These baroclinic systems can also influence the steering of tropical waves and cyclones, depending on the vertical structure of the warmer feature. There are also cases of merger

GALVESTON BAY SPIN-UPS Region Of Cyclogenesis: Western Gulf of Mexico, East Texas or Louisiana Lowest

cold air affecting sections of the Midwest and/or Northeast. Forecast Considerations for Great Lakes Backdoor Storms are: 1) Advection of cA or cAk values from NU AR and N MB into a relatively

1) TYPES OF UPPER LEVEL CYCLONIC SYSTEMS TUTT SIGNATURES Upper-level cyclones normally have

then spread north-northeast before the low exits the coast over the Delmarva Peninsula. If cold air is present in New England or Quebec, changeover to frozen types may occur. The name

HATTERAS LOWS (Nor'easters) MILLER "A" and MILLER "B" Scenarios Region Of

A GUIDE TO BAROCLINIC DISTURBANCES AFFECTING NORTH AMERICA Foreword One of the greatest challenges in forecasting is finding a way to quickly categorize and summarize upcoming weather

Speed; Disturbances In Semizonal Jet Stream Could Bring More Severe Weather To Northern Tier Of US (Disclaimer And Copyright Statements At End Of The Discussion) TODAY'S FUN

A Heat Wave And Then Some! Dangerously Hot Air Mass Targets Most of Midwest And Northeast While

Massive, Long-Lived Heat Wave Across Much Of Lower 48 States! Persistent Severe Weather Threat

couplet of disturbances downstream, the forward motion of the newer low will be very gradual, probably reaching the "Four Corners" vicinity on Day 3. Interestingly, both

Turbulent Weather Pattern Over North America As Unseasonably Mild Air Is Dislodged By Bitter Cold (

Three separate disturbances in a sequence originating over the Gulf of Alaska will impact the lower 48 states and Canada between now and Sunday. For brevity, impulse 1 is deepening

and mesoscale disturbances in the 500MB flow), the eventual organization of a blizzard in the upper St. Lawrence Valley and interior New England should serve as a reminder to the "

Another Rain/Thunder Event Shaping Up For Dixie, Eastern Seaboard This Week; 500MB Longwave Pattern