Welcome!The Topic For Today Is

The Numbers Game

The Numbers GameExplain the 850mb Temps

Estimate the 500mb Heights

Predict the 1000-500mb Thickness

The Wind Direction (in degrees)

Surface Pressure

200 200 200 200 200

400 400 400 400 400

600 600 600 600 600

800 800 800 800 800

1000 1000 1000 1000 1000

Bonus Question: 5000 pts

Explain the 850 Temps: 200

• Question:• Zero Degrees Celsius• Answer• What is an estimate of the rain-snow line?

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Explain the 850 Temps : 400

• Question:• 20C on a sunny day• Answer• What is threshold for 100F (east of the mts)?

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Explain the 850 Temps : 600

• Question:• -20C in January• Answer• What an estimate of Zero(F) at night

(isothermal)?

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Explain the 850 Temps : 800

• Question:• 7C:Temp; -15C Dew point in March• Answer• What is a wet bulb zero that could produce

snow after a day in the 50’s!

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Explain the 850 Temps : 1000

• Question:• 5C on a calm night in September• Answer• What will produce widespread valley fog

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Estimate the 500mb heights: 200

• Question:• At this level in an Atlantic hurricane.• Answer• What is 580dm?

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Estimate the 500mb heights : 400

• Question:• In the blizzard of March, 1993.• Answer• What is 494dm?

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Estimate the 500mb heights : 600

• Question:• During a typical snowstorm in PA.• Answer• What is 552dm?

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Estimate the 500mb heights : 800

• Question:• In a heat wave in New England.• Answer• What is 594dm?

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Estimate the 500mb heights : 1000

• Question:• During a winter cold snap in Florida.• Answer• What is 546dm?

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Predict the 1000-500mb Thickness

: 200• Question:• When Philadelphia hits 100F.• Answer• What is more than 576dm?

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Predict the 1000-500mb Thickness : 400

• Question:• When it snows in Denver during October.• Answer• What is 555dm?

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Predict the 1000-500mb Thickness : 600

• Question:• During a record low in INL in January.• Answer• What is less than 490dm?

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Predict the 1000-500mb Thickness : 800

• Question:• During a heat wave in September in southern

California.• Answer• What is more than 580dm?

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Predict the 1000-500mb Thickness : 1000

• Question:• During a snowstorm in Seattle.• Answer• What is less than 522dm?

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The Wind Direction: 200

• Question:• Lake Effect snow at Erie, PA• Answer• What is 280 degrees?

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The Wind Direction : 400

• Question:• Heat spell in Richmond, VA• Answer• What is 300 degrees?

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The Wind Direction : 600

• Question:• Heat wave in Los Angeles.• Answer• What is an east wind (030-130 degrees)?

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The Wind Direction : 800

• Question:• Cold wave in Brownsville, TX.• Answer• What is 340 degrees?

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The Wind Direction : 1000

• Question:• Lake effect in Toldeo, OH.• Answer• What is 090 (east wind)?

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Surface Pressure: 200

• Question:• Highest in the contiguous United States.• Answer• What is 31.42” or 1064mb?

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Surface Pressure: 400

• Question:• Lowest pressure in Florida.• Answer• What is 26.35” or 892mb ?

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Surface Pressure: 600

• Question:• Mean annual at Atlantic City.• Answer• What is 1013.6mb (30.00”)

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Surface Pressure: 800

• Question:• Station pressure at State College• Answer• What is 970mb?

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Surface Pressure: 1000

• Question:• The highest pressure in PA.• Answer• What is 31.10 inches or 1053mb?

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Daily Double

Select how much you are willing to risk….The Topic is Hurricanes

Bonus Question: 5000 pts.

• Question:• According to Quasi-geostrophic theory, PVA is a

source of upward motion provided the winds increase with height. How do we get such strong vertical motions in a hurricane with the strongest winds below 700mb?

• Answer• Because there is actually NVA above this level

due to the ridge aloft over the storm! Back