Level

Instructions

250 mb

Mark any significant jets in purple. Include areas of strong divergence.

500

Mark any significant jets in blue. Include closed lows in open red letters and label 500mb.

700

Mark any significant jets in brown. Include closed lows in open red letters and label 700mb. Draw the 6° , 8° , 10° , 12° and 14° isotherms in brown and hatch regions greater than 12° .

850

Mark any significant jets in red. Include closed lows in open red letters and label 850mb. Contour the 0° isotherm in dashed blue. Draw in the 5° , 10° , 15° , 20° isodrosotherms in dashed green. Identify the thermal axis in red filled circles.

700-500

Draw in black dashed line, the 16° and 20° isotherms of the 700-500mb lapse rates.

Surface

Label in closed letters the surface highs and lows. Include max and min values. Draw in easily identifiable fronts and other surface features. Contour the 50° 60° and 70° isodrosotherms and use as a basis to draw in the low-level moisture axis in dark green filled circles.

First guess

In orange, outline an area that might be favorable for severe weather.