Product: Air Force Temp Drop (Dropsonde) Message (UZNT13 KNHC)
Transmitted: 25th day of the month at 15:35Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5305
Storm Number: 09
Storm Name: Harvey (flight in the North Atlantic basin)
Mission Number: 17
Observation Number: 35
Part A...
Date: Near the closest hour of 15Z on the 25th day of the month
Highest Mandatory Level For Which Wind Was Reported: 700mb
Coordinates: 26.9N 95.9W
Location: 109 statute miles (176 km) to the ESE (122°) from Corpus Christi, TX, USA.
Marsden Square: 082 (
About )
Surface and Standard Isobaric Surfaces
Level Geo. Height Air Temp. Dew Point Wind Direction Wind Speed
1000mb -280m (-919 ft) This level does not exist in this area of the storm above the surface level.
969mb (28.62 inHg) Surface (Sea Level) 26.2°C (79.2°F) 25.2°C (77°F) 90° (from the E) 93 knots (107 mph)
925mb 410m (1,345 ft) 23.8°C (74.8°F) 23.1°C (74°F) 115° (from the ESE) 123 knots (142 mph)
850mb 1,151m (3,776 ft) 21.0°C (69.8°F) 20.3°C (69°F) 130° (from the SE) 108 knots (124 mph)
700mb 2,819m (9,249 ft) 13.8°C (56.8°F) 13.6°C (56°F) 155° (from the SSE) 99 knots (114 mph)
Information About Radiosonde:
- Launch Time: 15:19Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.
Remarks Section...
Dropsonde Location: Dropped in eyewall 45° (NE) from the eye center.
Highest altitude where wind was reported:
- Location: 26.86N 95.87W
- Time: 15:19:16Z
Lowest altitude where wind was reported:
- Location: 26.95N 95.98W
- Time: 15:23:43Z
Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 110° (from the ESE)
- Wind Speed: 116 knots (133 mph)
Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 135° (from the SE)
- Wind Speed: 106 knots (122 mph)
- Depth of Sounding: From 696mb to 968mb
Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 157 gpm - 7 gpm (515 geo. feet - 23 geo. feet)
- Wind Direction: 100° (from the E)
- Wind Speed: 110 knots (127 mph)
Sounding Software Version: AEV 33304
Part B: Data for Significant Levels...
Significant Temperature And Relative Humidity Levels
Level Air Temperature Dew Point
969mb (Surface) 26.2°C (79.2°F) 25.2°C (77°F)
850mb 21.0°C (69.8°F) 20.3°C (69°F)
707mb 15.0°C (59.0°F) 14.6°C (58°F)
696mb 13.0°C (55.4°F) 13.0°C (55°F)
Significant Wind Levels
Level Wind Direction Wind Speed
969mb (Surface) 90° (from the E) 93 knots (107 mph)
966mb 95° (from the E) 92 knots (106 mph)
960mb 100° (from the E) 116 knots (133 mph)
953mb 105° (from the ESE) 117 knots (135 mph)
946mb 110° (from the ESE) 114 knots (131 mph)
941mb 110° (from the ESE) 124 knots (143 mph)
937mb 115° (from the ESE)
127 knots (146 mph)
924mb 115° (from the ESE) 122 knots (140 mph)
918mb 120° (from the ESE) 111 knots (128 mph)
908mb 125° (from the SE) 111 knots (128 mph)
901mb 120° (from the ESE) 126 knots (145 mph)
896mb 125° (from the SE) 119 knots (137 mph)
889mb 130° (from the SE) 121 knots (139 mph)
875mb 135° (from the SE) 108 knots (124 mph)
850mb 130° (from the SE) 108 knots (124 mph)
696mb 155° (from the SSE) 98 knots (113 mph)