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Meteorology Exam 4 Flashcards
Here to help with my meteorology final!
41 cards·by crayonwarrior
A forecast made for now-6 hrs
nowcasting
A forecast for 1-3 days in advance
short range
3-5 day forecast
medium range
5-10 day forecast
long range
Up to 90 days
extended
"Red sky at night, sailor's delight" is an example of
folklore forecasting
When using the logic that what happened in today's weather will probably happen tomorrow, you
are using
persistance forecasting
Where does persistence forecasting work best?
The tropics
When using past weather data to predict today's weather, you are using...
climatology
A short-term prediction method that assumes that a weather system's speed and direction will
not change
trend method
Looking into the past to find a day where the weather was almost the exact same in order to make a
forecast is...
analog forecasting
With which weather events does analog forecasting work best?
Severe weather events
The most accurate, commonly used method of forecasting
numerical modeling
The point in the middle of a computer model is known as the
grid point
Models are divided into 3D models called
grids
North American Mesoscale model
NAM
GFS
Global Forecast System
SREF
Short Range Ensemble Forecast
NGM
Nested Grid Model
RUC
Rapid Update Cycle
WRF
Weather Research & Forecast Model
Good initial conditions will result in
a good numerical forecast
MOS
Model Output Statistics
The Forecasting Process
observations, analysis, prediction, post-processing
10,000 of these observations are made daily at numerous weather stations around the globe
land observations
7,000 of these observations are also made
ship observations
How many weather balloons are released daily?
1,000
How many buoy observations are made daily?
300
The key to making an accurate forecast is
asking yourself many questions!
A ______ indicates that severe weather has a high chance of occurring
watch
A ________ indicates that severe weather is occurring and you should definitely seek shelter
warning
Strong gusty winds, hail of all sizes, precipitation (rain or snow) and tornados are all
characteristics of
a thunderstorm
AWIPS
Advanced Weather Interactive Processing System
What is AWIPS?
A National Weather Service communication system
AWIPS uses data from
Doppler Radar, satellite imagery, and ASOS
ASOS
Automated Surface Observing Systems
A prognostic chart is usually just referred to as a
prog
Three types of thunderstorms
ordinary "pop up" storms, multicell storms, supercell storms
Pop up thunderstorms are ___-__________, meaning that they kill themselves with their own
downdrafts
self-extinguishing
Stage one of pop-up thunderstorm development
Growth stage
In the mature stage, the top of a pop up storm develops this shape
anvil