WX 360 Quiz 2 Question and answers
100% correct 2025/2026
National Hurricane Center how they define tropical cyclones and intensities and high-seas/marine
forecasts - correct answer ✔1 minute average wind speed at 10 meters elevation
What must happen to the data collected since no all observation platforms produce a 1-minute and
average wind speed at 10m elevation - correct answer ✔Data must be converted to a standard
How are wind speeds adjusted to a standard level - correct answer ✔The Power Law
Method/logarithmic marine wind speed profile
What is the accuracy of the Global Surface Observing/Network - correct answer ✔Is not sufficient to
accurately determine the intensity of Tropical Cyclones, especially over the open ocean, due to the large
spaceing (I.e., coarse resolution) between relatively sparse observing sites.
What and why are GUAN stations spaced where they are? - correct answer ✔Is set at 5 to 10 degrees
of latitude, sufficient to resolve synoptic-scale waves
What time does most sites launch radiosondes at? - correct answer ✔0000 UTC
Who controls reconnaissance flights - correct answer ✔FAA or International ATCs
Who coordinates international overflights - correct answer ✔International overflights (e.g., Cuba,
Mexico) are
first coordinated through
State Departments or Diplomatic Agencies
, Flight planning and coordination is conducted by? - correct answer ✔The NHC and the "Chief, Aerial
Reconnaissance Coordination, All Hurricanes" (CARCAH) group located at NHC
Suggested Flight Patterns for Investigative Missions - correct answer ✔Flight patterns can be modified
in situ by the aircraft commander for safety reasons or by NHC forecasters to enhance data collection
Altitudes for disturbance/TD/moderate-TS - correct answer ✔Altitude: (1,000-1,500ft)/ Wind ADJ:
(80%)
Altitudes for strong-TS/strong low-level TURBC - correct answer ✔Altitude: (2,500)(925mb)/Wind ADJ:
(75%)
Altitudes for Category 1 hurricane - correct answer ✔Altitude: (5,000ft)(850mb)/Wind ADJ:80%
Altitudes for >Category 2 hurricane - correct answer ✔Altitude: (10,000ft)(700mb)/Wind ADJ:90%
What data is collected from high-density observations Data (HDOB) data - correct answer ✔30-SECOND
AVERAGE (FLIGHT-LEVEL WINDS, TEMP, DEWPOINT, ETC)
•10-SECOND AVERAGE 'PEAK' WIND SPEED DURING 30-SECOND INTERVAL
> I.E., 10-SECOND MOVING SAMPLE
•10-SECOND AVERAGE 'PEAK' SFMR-DERIVED SURFACE WIND SPEED
•10-SECOND SFMR DERIVED RAIN RATE
> AT LOWER ACTUAL WIND SPEEDS, HEAVY RAIN CAN INFLATE SFMR WIND SPEED
100% correct 2025/2026
National Hurricane Center how they define tropical cyclones and intensities and high-seas/marine
forecasts - correct answer ✔1 minute average wind speed at 10 meters elevation
What must happen to the data collected since no all observation platforms produce a 1-minute and
average wind speed at 10m elevation - correct answer ✔Data must be converted to a standard
How are wind speeds adjusted to a standard level - correct answer ✔The Power Law
Method/logarithmic marine wind speed profile
What is the accuracy of the Global Surface Observing/Network - correct answer ✔Is not sufficient to
accurately determine the intensity of Tropical Cyclones, especially over the open ocean, due to the large
spaceing (I.e., coarse resolution) between relatively sparse observing sites.
What and why are GUAN stations spaced where they are? - correct answer ✔Is set at 5 to 10 degrees
of latitude, sufficient to resolve synoptic-scale waves
What time does most sites launch radiosondes at? - correct answer ✔0000 UTC
Who controls reconnaissance flights - correct answer ✔FAA or International ATCs
Who coordinates international overflights - correct answer ✔International overflights (e.g., Cuba,
Mexico) are
first coordinated through
State Departments or Diplomatic Agencies
, Flight planning and coordination is conducted by? - correct answer ✔The NHC and the "Chief, Aerial
Reconnaissance Coordination, All Hurricanes" (CARCAH) group located at NHC
Suggested Flight Patterns for Investigative Missions - correct answer ✔Flight patterns can be modified
in situ by the aircraft commander for safety reasons or by NHC forecasters to enhance data collection
Altitudes for disturbance/TD/moderate-TS - correct answer ✔Altitude: (1,000-1,500ft)/ Wind ADJ:
(80%)
Altitudes for strong-TS/strong low-level TURBC - correct answer ✔Altitude: (2,500)(925mb)/Wind ADJ:
(75%)
Altitudes for Category 1 hurricane - correct answer ✔Altitude: (5,000ft)(850mb)/Wind ADJ:80%
Altitudes for >Category 2 hurricane - correct answer ✔Altitude: (10,000ft)(700mb)/Wind ADJ:90%
What data is collected from high-density observations Data (HDOB) data - correct answer ✔30-SECOND
AVERAGE (FLIGHT-LEVEL WINDS, TEMP, DEWPOINT, ETC)
•10-SECOND AVERAGE 'PEAK' WIND SPEED DURING 30-SECOND INTERVAL
> I.E., 10-SECOND MOVING SAMPLE
•10-SECOND AVERAGE 'PEAK' SFMR-DERIVED SURFACE WIND SPEED
•10-SECOND SFMR DERIVED RAIN RATE
> AT LOWER ACTUAL WIND SPEEDS, HEAVY RAIN CAN INFLATE SFMR WIND SPEED
