Latest VDM

roduct: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 16th day of the month at 16:57Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF98-5308
Storm Name: Erin
Storm Number & Year: 05 in 2025 (flight in the North Atlantic basin)
Mission Number: 9
Observation Number: 25

A. Time of Center Fix: 16th day of the month at 16:39:10Z
B. Center Fix Coordinates: 19.70N 63.02W
B. Center Fix Location: 218 statute miles (351 km) to the ENE (66°) from San Juan, Puerto Rico (U.S.).
C. Minimum Height at Standard Level: 2,403m (7,884ft) at 700mb
D. Minimum Sea Level Pressure: 919mb (27.14 inHg)
E. Dropsonde Surface Wind at Center: From 165° at 59kts (From the SSE at 68mph)
F. Eye Character: Closed
G. Eye Shape: Concentric (has an inner and outer eye)
G. Inner Eye Diameter: 5 nautical miles (6 statute miles)
G. Outer Eye Diameter: 30 nautical miles (35 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 132kts (151.9mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 1 nautical miles to the NE (41°) of center fix at 16:38:30Z
J. Maximum Flight Level Wind Inbound: From 140° at 154kts (From the SE at 177.2mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 4 nautical miles to the NE (43°) of center fix at 16:37:30Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 142kts (163.4mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 4 nautical miles to the SW (225°) of center fix at 16:40:30Z
N. Maximum Flight Level Wind Outbound: From 297° at 127kts (From the WNW at 146.1mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 3 nautical miles to the SW (231°) of center fix at 16:40:00Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 11°C (52°F) at a pressure alt. of 3,039m (9,970ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 23°C (73°F) at a pressure alt. of 2,815m (9,236ft)
R. Dewpoint Temp & Sea Surface Temp: Not Available
S. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
S. Fix Level: 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 1 nautical mile

Remarks Section:

Maximum Flight Level Wind: 154kts (~ 177.2mph) which was observed 4 nautical miles to the NE (43°) from the flight level center at 16:37:30Z