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Cards In This Set
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401. Three of the variables to take into account in developing strengths and weaknesses for a model:
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Terrain, latitudes, diabetics, adiabatics, evaporation, and condensation
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Describe how the National Weather Service or operational weather squadron model discussions help you:
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Discussions will give insight on what to watch for in particular model as well as how certain features may be off in your weather forecast area
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List to training items you should review as part of your on the job training:
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Rules of thumb and model biases
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Describe the final step in the verification, initialization, and verification process:
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Verify the 12 hour data of current model forecast with real-time data for the same time to determine how well the model is
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The initial conditions that models are based upon:
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Past and current weather observations or weather measurements
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What is inherent to the ensemble production system:
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For the ensemble production system, most steps of the VIV process are inherent to the ensemble and automated, while others are rendered superfluous or unnecessary
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402. The characteristics that separate severe thunderstorms from weaker ones:
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Stronger instability, which increases updraft speeds. Windshear environment above the storm separates updrafts from downdrafts, keeping them from interfering with each other
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What is the goal of severe weather analysis:
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Identify the pre-conditions that allow storms to become severe
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Describe multicellular storm regeneration:
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Each cell generates a cold outflow that can form a gust front; convergence along the boundary causes new cells to develop every 5 to 15 minutes
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Describe the internal dynamics of a supercell:
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Consist of rotating updraft, forward flank downdraft, rear-flank downdraft
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The synoptic feature and storm type associated with West Texas:
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Dry line; low precipitation supercells
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403. Lapse rate is conditionally unstable; surface temperatures above 80°F; moisture content is very high; relative humidity over 65%; WBZ above 11,000 feet; tornadoes short-lived, narrow paths, move slowly:
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Type two, Gulf Coast type
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Lapse rate is conditionally unstable; sounding has a dry lower layer with a cool, moist layer aloft; WBZ near 8000 feet; winds aloft increasing speed and veer with height; tornadoes isolated, rapid moving, short-lived, paths are short and narrow;
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Type four, inverted V type
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Lapse rate is conditionally unstable; air mass is colder than other types and surface temperatures range from 50°F to 68°F; moisture extends to great heights; relative humidity exceeding 70%; tornadoes have a brief life, with short narrow path's
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Type three, Pacific Coast type
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Air mass has inversion or stable layer with a conditionally unstable lapse rate above and below stable layer; moisture increases with height; when's invert increase with altitude in the dry air about the inversion; tornadoes are long lasting, and have wide paths
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Type one, great plains type
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