US Extended Forecast thru May 29


A New Trough Develops And Rotates East Across The North Pacific To
British Columbia/Pacific Northwest...And Then Into Ca...Supported
By A Building Upstream Ridge South Of The Aleutians.

As The Upper Jet Max Streaks Northeast Out Of The Northern Rockies
And High Plains...The Models Show A Wavy Low Level Front Drifting
East From The Rockies Across The Northern Plains.

As Low Level Moisture Increases Into The Bndry In The High Plains Of Mt Into Nd And Overlaps Upper Divergence/Lower Convergence Maxima...Shower Coverage Increases.

After The Departure Of The Southwest Trough Into The Plains And
Beyond...Heights Builds Across The Southwest Downstream From The Amplifying Northwest Trough.

The Gefs/Ecmwf Ensembles Are In Good Agreement That The 700 Mb Temp Anomalies Are Greatest On Day 7 Thu 29 May Over Nm... With The 700-500 Mb Anticyclone Building North Across Mexico Into The Rio Grange/Southern Nm.

Temps That Start Out Several Degrees Below Normal Day 3 In Nm/West Texas Flip To Become Several Degrees Above Normal By Day 7.


A High Amplitude Trough Persists With An Embedded 500 Mb Hpa
Closed Low Slowly Drifting East From The Southern High Plains
Across The Southern Plains And Mid Or Lower Ms Valley.

Showers And Thunderstorms Also Occur In Advance Of The Upper
Low...Starting On The High Plains Of Northwest Texas And Western
Oklahoma...Which Should Help Replenish Water To The Drought
Parched Region.

This Threat Spreads East In Conjunction With The Upper Trough Movement Across The Rest Of The Southern/Central Plains And Then Lower Ms Valley.

Following The Departure Of The East Coast Trough...Heights Build
East Early To Mid Next Week Downstream From The Developing Western Trough.

Temps Over The Great Lakes Should Trend Warmer During The
Weekend To Next Week As An Axis Of Above Normal Temps From The Nrn Plains Moves Ewd To The Lakes/Oh Valley/Tn Valley Day 5 Tue 27 May And Then Across The Appalachians/Northeast/Mid Atlantic Day 6/7 Wed 28 May-Thu 29 May.

The Models/Ensembles Are In Better Than Average Agreement A Mid
Level Anticyclone Drifts Southeast To The Gulf Coast/Gulf Of Mexico.

This Leads To Warmer Than Normal Temps Across The Lower Ms Valley To The Southeast/Gulf Coast And Then Fl...Except For Near Normal Temps Along The Southeast Coast Of Fl Due To The Cooling Onshore Flow.

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