| cieldumort |
| (Moderator) |
| Wed Aug 26 2020 10:26 AM |
|
Re: Within Hours of Laura's Landfall
|
Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 26th day of the month at 10:18Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF96-5301
Storm Number & Year: 13 in 2020
Storm Name: Laura (flight in the North Atlantic basin)
Mission Number: 21
Observation Number: 06
A. Time of Center Fix: 26th day of the month at 9:59:10Z
B. Center Fix Coordinates: 26.11N 91.05W
B. Center Fix Location: 274 statute miles (441 km) to the SSW (193°) from New Orleans, LA, USA.
C. Minimum Height at Standard Level: 2,838m (9,311ft) at 700mb
D. Minimum Sea Level Pressure: 969mb (28.62 inHg)
E. Dropsonde Surface Wind at Center: From 115° at 3kts (From the ESE at 3mph)
F. Eye Character: Closed
G. Eye Shape: Elliptical (oval shaped)
G. Orientation of Major Axis in Elliptical Eye: 360° to 180° (N to S)
G. Length of Major Axis in Elliptical Eye: 36 nautical miles (41 statute miles)
G. Length of Minor Axis in Elliptical Eye: 25 nautical miles (29 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 95kts (109.3mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 19 nautical miles (22 statute miles) to the NE (41°) of center fix at 9:53:30Z
J. Maximum Flight Level Wind Inbound: From 130° at 104kts (From the SE at 119.7mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 26 nautical miles (30 statute miles) to the NE (43°) of center fix at 9:51:30Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 65kts (74.8mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 15 nautical miles (17 statute miles) to the SW (221°) of center fix at 10:03:30Z
N. Maximum Flight Level Wind Outbound: From 317° at 77kts (From the NW at 88.6mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 11 nautical miles (13 statute miles) to the SW (218°) of center fix at 10:02:30Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 12°C (54°F) at a pressure alt. of 3,066m (10,059ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 14°C (57°F) at a pressure alt. of 3,050m (10,007ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 12°C (54°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
S. Fix Levels (surface & flight level centers within 5nm of each other): Surface and 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 2 nautical miles
Remarks Section: Maximum Flight Level Wind: 104kts (~ 119.7mph) which was observed 26 nautical miles (30 statute miles) to the NE (43°) from the flight level center at 9:51:30Z