John 'JT' Lamb
@bigbearjt.bsky.social
Writer, disabled MS warrior partnered to @brojoghost for 15 years. -- If you follow. tell me who you are! he/him they/them.
Ham Radio Operator - N9KDK Home QTH: Champlin, MN EN35hd
There will be lots of weather, some photography, and random brain dumps!
Ham Radio Operator - N9KDK Home QTH: Champlin, MN EN35hd
There will be lots of weather, some photography, and random brain dumps!
I'm sure there are terms and abbreviations I'll use going forward that I haven't explained here, please feel free to comment and ask.
February 6, 2025 at 9:16 PM
I'm sure there are terms and abbreviations I'll use going forward that I haven't explained here, please feel free to comment and ask.
CC - Correlation Coefficient: Rain drops are all generally the same same (correctional coefficient near 1) Hail is more irregularly shaped and will pull the CC down to around .7 or .8 - Tornado thrown debris will be of all shapes and sizes causing a very marked decrease in the CC data. (CC drop)
February 6, 2025 at 9:16 PM
CC - Correlation Coefficient: Rain drops are all generally the same same (correctional coefficient near 1) Hail is more irregularly shaped and will pull the CC down to around .7 or .8 - Tornado thrown debris will be of all shapes and sizes causing a very marked decrease in the CC data. (CC drop)
Radar terminology:
88D - current generation of US/Canadian wx radar
Reflectivity - most common imagery seen depicting precipitation echos.
Velocity - shows the actual motion of the atmosphere
SRM - Storm Relative Motion - shows velocity as it appear if you were looking from the storm
88D - current generation of US/Canadian wx radar
Reflectivity - most common imagery seen depicting precipitation echos.
Velocity - shows the actual motion of the atmosphere
SRM - Storm Relative Motion - shows velocity as it appear if you were looking from the storm
February 6, 2025 at 9:16 PM
Radar terminology:
88D - current generation of US/Canadian wx radar
Reflectivity - most common imagery seen depicting precipitation echos.
Velocity - shows the actual motion of the atmosphere
SRM - Storm Relative Motion - shows velocity as it appear if you were looking from the storm
88D - current generation of US/Canadian wx radar
Reflectivity - most common imagery seen depicting precipitation echos.
Velocity - shows the actual motion of the atmosphere
SRM - Storm Relative Motion - shows velocity as it appear if you were looking from the storm
Hodograph (part of a Skew-T) - a technical diagram detailing the state of the atmosphere from the surface to around 75000 feet aloft.
February 6, 2025 at 9:16 PM
Hodograph (part of a Skew-T) - a technical diagram detailing the state of the atmosphere from the surface to around 75000 feet aloft.
DP (also Td) - Dewpoint, if the atmosphere was cooled to this temperature, the humidity would be 100%.
Advection: movement towards the forecast area:
can be cold air, warm air, or increasing/decreasing moisture.
Vorticity - movement in a certain direction
Helicity - upward rotating motion.
Advection: movement towards the forecast area:
can be cold air, warm air, or increasing/decreasing moisture.
Vorticity - movement in a certain direction
Helicity - upward rotating motion.
February 6, 2025 at 9:16 PM
DP (also Td) - Dewpoint, if the atmosphere was cooled to this temperature, the humidity would be 100%.
Advection: movement towards the forecast area:
can be cold air, warm air, or increasing/decreasing moisture.
Vorticity - movement in a certain direction
Helicity - upward rotating motion.
Advection: movement towards the forecast area:
can be cold air, warm air, or increasing/decreasing moisture.
Vorticity - movement in a certain direction
Helicity - upward rotating motion.
Terminology:
SVR - Severe (weather/thunderstorm)
TOR - Tornado
PDS - Particularly Dangerous Situation
Watch - Conditions are favorable for development of the condition (Severe storms, Tornadoes, etc)
Warning - This is actually occurring and immediate action is necessary.
SVR - Severe (weather/thunderstorm)
TOR - Tornado
PDS - Particularly Dangerous Situation
Watch - Conditions are favorable for development of the condition (Severe storms, Tornadoes, etc)
Warning - This is actually occurring and immediate action is necessary.
February 6, 2025 at 9:16 PM
Terminology:
SVR - Severe (weather/thunderstorm)
TOR - Tornado
PDS - Particularly Dangerous Situation
Watch - Conditions are favorable for development of the condition (Severe storms, Tornadoes, etc)
Warning - This is actually occurring and immediate action is necessary.
SVR - Severe (weather/thunderstorm)
TOR - Tornado
PDS - Particularly Dangerous Situation
Watch - Conditions are favorable for development of the condition (Severe storms, Tornadoes, etc)
Warning - This is actually occurring and immediate action is necessary.