Lab 6-5Lab 6-5

Weather Weather PatternsPatterns

Map A: IsothermsMap A: Isotherms

Connect points of equal valueConnect points of equal value Use an interval of 10Use an interval of 10°F°F Stop your lines when they go off the coast.Stop your lines when they go off the coast.

If more dots are needed, add some…

Map B: IsobarsMap B: Isobars Write the following in an empty space on the map:Write the following in an empty space on the map:

MillibarsMillibars Station Model CodeStation Model Code1024.01024.01020.01020.01016.01016.01012.01012.01008.01008.01004.01004.01000.01000.0

Fill in the code here

Draw isobarsDraw isobars Use an interval of 4mb.Use an interval of 4mb. Label the highest pressure with anLabel the highest pressure with an

Label the lowest pressure with anLabel the lowest pressure with an

Map B: Isobars- ContinuedMap B: Isobars- Continued

Map C: Wind PatternsMap C: Wind PatternsDraw arrows…Draw arrows…

Map C: Wind PatternsMap C: Wind PatternsNow Draw Large Arrows…Now Draw Large Arrows…

Map D:Map D:Precipitation PatternsPrecipitation Patterns

Draw a line encompassing the entire area Draw a line encompassing the entire area where rain is falling.where rain is falling.

Lightly shade it in with pencil.Lightly shade it in with pencil. Label the Air Masses.Label the Air Masses.

Handy Dandy Earth Science Handy Dandy Earth Science Reference Tables, pg 13Reference Tables, pg 13

An Air Mass is a large region of air that has An Air Mass is a large region of air that has the same temperature and humidity.the same temperature and humidity.

It gets its properties from hanging out in the It gets its properties from hanging out in the same region for a while.same region for a while.

For example:For example:

If the source region is the gulf of Mexico If the source region is the gulf of Mexico and the air comes to Long Island…and the air comes to Long Island…

It will feel warm and moist to us: maritime It will feel warm and moist to us: maritime tropical (mT).tropical (mT).

If it comes from central Canada…If it comes from central Canada… It will feel cold and dry to us: continental It will feel cold and dry to us: continental

polar (cP)polar (cP)

What type of air mass?What type of air mass?

Cool & moist: mP

mP

Cool & Dry:

cP

Warm & Moist:

mT

cT

mT

mP

mT

Make the Synoptic MapMake the Synoptic Map Use Instruction #1 as a check list of things to put Use Instruction #1 as a check list of things to put

on the map.on the map. Add the fronts.Add the fronts.

Now that we know WHERE the Now that we know WHERE the fronts are, how do we know what fronts are, how do we know what

KIND they are?KIND they are?

If colder air is coming in, it is a cold front.If colder air is coming in, it is a cold front. If warmer air is coming in, it is a warm If warmer air is coming in, it is a warm

front.front.

How to Find & Label Fronts