2019 Winter Forum Weather Overview and Forecast September 19, 2019 - - PowerPoint PPT Presentation

2019 winter forum
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2019 Winter Forum Weather Overview and Forecast September 19, 2019 - - PowerPoint PPT Presentation

2019 Winter Forum Weather Overview and Forecast September 19, 2019 Jeff Jensen Bachelor of Science | Meteorology | Iowa State University Broadcast Meteorologist | Alabama, Kentucky, Iowa and Nebraska Customer Service Representative | Northern


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Weather Overview and Forecast September 19, 2019

2019 Winter Forum

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Jeff Jensen

Bachelor of Science | Meteorology | Iowa State University Broadcast Meteorologist | Alabama, Kentucky, Iowa and Nebraska Customer Service Representative | Northern Natural Gas | Omaha, Nebraska | 2008 - present

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Fall: September – October – November Winter: December – January – February Spring: March – April – May

The Seasons

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Review of Jeff’s 2018 – 2019 Forecast

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TEMPERATURE PRECIPITATION

Last Fall’s Forecast

September – October – November 2018 2018 2018

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Hurricane Michael

October 9, 2018 Category 5 storm – winds of >157 mph

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Hurricane Michael

October 10, 2018 Mexico Beach, Florida

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Hurricane Michael

October 10, 2018 Mexico Beach, Florida

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Early Snow!

October 14, 2018 3.4” measured in LaVista, Nebraska 2016

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Early Snow!

October 14, 2018 Over 6” Southwest of Lincoln, Nebraska 2016

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Early Snow!

October 14, 2018

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November 1, 2018

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November 30 –December 2, 2018

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November 30 –December 2, 2018

Around 5-6” in Omaha, Nebraska

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TEMPERATURE PRECIPITATION

Last Fall’s Forecast

September – October – November 2018 2018 2018

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TEMPERATURE PRECIPITATION

Actual Fall Departures

September – October – November 2018 2018 2018

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December 1, 2018

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TEMPERATURE PRECIPITATION

Last Winter’s Forecast

December – January – February 2018 2019 2019

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Dry West Heading into Winter

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January 1, 2019

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Mid Winter Bitter Cold

January 30, 2019 The latest Polar Vortex slides south

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Mid Winter Bitter Cold

January 30, 2019 The latest Polar Vortex slides south

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Mid Winter Bitter Cold

January 30, 2019 The latest Polar Vortex slides south

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Mid Winter Bitter Cold

January 30, 2019 The latest Polar Vortex slides south

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February 1, 2019

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Late Winter Blizzard

February 23-24, 2019 Omaha, Nebraska2016

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Late Winter Blizzard

February 23-24, 2019 Omaha, Nebraska2016

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Late Winter Blizzard

February 23-24, 2019 Near Emmetsburg, Iowa 2016

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TEMPERATURE PRECIPITATION

Last Winter’s Forecast

December – January – February 2018 2019 2019

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TEMPERATURE PRECIPITATION

Actual Winter Departures

December – January – February 2018 2019 2019

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1sthalf of winter 2ndhalf of winter

Actual Winter Departures

December – January – February 2018 2019 2019

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1sthalf of winter 2ndhalf of winter

Actual Winter Departures

December – January – February 2018 2019 2019

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TEMPERATURE PRECIPITATION

Last Spring’s Forecast

March – April – May 2019 2019 2019

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March 1, 2019

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Early Spring Severe Weather

March 3, 2019 Near Beauregard, Alabama

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Early Spring Severe Weather

March 3, 2019 Over a ½ hour lead time

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Early Spring Severe Weather

March 3, 2019

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Early Spring Severe Weather

March 3, 2019 Near Beauregard, Alabama – EF-4 damage/23 dead

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Early Spring Severe Weather

March 3, 2019 Winds estimated over 170 mph!

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Early Spring Severe Weather

March 3, 2019 Winds estimated over 170 mph!

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Northern’s Market Area temperatures were 13% colder than normal during the heating season of November 1 – March 31.

2018 – 2019 Heating Season Results

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2018 – 2019 Heating Season Results

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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Midwest Mid-March Major Flooding

Rain + quick snowmelt + ice jams = flooding

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April 1, 2019

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Much Snowier Than a Normal Winter!

Omaha’s ‘Normal’ Seasonal Snowfall

27.1”

2018 – 2019 Snowfall

52.7” (+25.6”)

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Another Snowy Season North!

Minneapolis’ ‘Normal’ Seasonal Snowfall

45.3”

2018 – 2019 Snowfall

77.1” (+32.1”)

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May 1, 2019

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TEMPERATURE PRECIPITATION

Last Spring’s Forecast

March – April – May 2019 2019 2019

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TEMPERATURE PRECIPITATION

Actual Spring Departures

March – April – May 2019 2019 2019

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Weather Trivia Time

What was the heaviest snow in San Antonio in the past 5 years?

1.9” December 7, 2017 3.0” January 5, 2016 0.7” December 28, 2018 1.2” March 1, 2019

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Weather Trivia Time

What was the heaviest snow in San Antonio in the past 5 years?

1.9” December 7, 2017 3.0” January 5, 2016 0.7” December 28, 2018 1.2” March 1, 2019

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Long Range Forecasting

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The Woolly Bear Caterpillar Technique

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The Woolly Bear Caterpillar Technique

Omaha, Nebraska September 1, 2019

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Sunspots

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Sunspot Cycles

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Recent Sunspot Cycles

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Current Sunspot Activity

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Snow Cover in the Northern Hemisphere

September 15, 2019

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Sea Surface Temperature Anomalies

September 12, 2019

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Sea Surface Temperature Anomalies

Warm waters

September 12, 2019

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El Nino Unlikely for Winter 2019– 2020

September 2019

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El Nino Unlikely for Winter 2019– 2020

September 2019

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Predictive Ocean Atmosphere Model from Australia

CURRENT FORECAST

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Last Winter was a ‘Weak El Nino Winter’

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Monthly Historic El Nino/La Nina Data

1950-today

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Monthly Historic El Nino/La Nina Data

1950-today

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A Look at Jeff’s 2019 – 2020 Forecast

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TEMPERATURE PRECIPITATION

NOAA Fall Outlook

September – October – November 2019 2019 2019

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TEMPERATURE PRECIPITATION

Jeff’s Fall Forecast

September – October – November 2019 2019 2019

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TEMPERATURE PRECIPITATION

NOAA Winter Outlook

December – January – February 2019 2020 2020

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The Weather Network’s Winter Outlook

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Jeff’s Winter Forecast

December – January – February 2019 2020 2020

TEMPERATURE PRECIPITATION

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TEMPERATURE PRECIPITATION

NOAA Spring Outlook

March – April – May 2020 2020 2020

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Jeff’s Spring Forecast

March – April – May 2020 2020 2020

TEMPERATURE PRECIPITATION

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To conclude…….

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FALL: Most of the nation – Near normal to slightly below normal temperatures east Pacific NW/West Coast – Above normal temperatures Most of the country – Near normal rainfall WINTER: SPRING:

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FALL: Most of the nation – Near normal to slightly below normal temperatures east Pacific NW/West Coast – Above normal temperatures Most of the country – Near normal rainfall WINTER: West of Rockies – Mild Temperatures East of Rockies – Slightly below normal temperatures Less snow than last winter Southeast – Below normal temperatures/below normal precipitation SPRING:

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FALL: Most of the nation – Near normal to slightly below normal temperatures east Pacific NW/West Coast – Above normal temperatures Most of the country – Near normal rainfall WINTER: West of Rockies – Mild Temperatures East of Rockies – Slightly below normal temperatures Less snow than last winter Southeast – Below normal temperatures/below normal precipitation SPRING: Most of the nation – Mild temperatures New England – Cooler than normal Southeast – Drier than normal Rest of nation – Near normal rainfall

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That’s a wrap for this year!

Thank You!

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