danielw
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| (Moderator) |
| Thu Jul 28 2011 02:34 PM |
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Re: Recon
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Latest water vapor imagery indicates Don has lost the tail of convection that was over the Yucatan Channel earlier. This is probably due to the Northerly winds just to the east of Don.
Don is in a pinch area between a ULL to the west. and east with a ridge descending and squeezing the eastern ULL.
Kind of like a doughnut in your hands being pressed from both sides. Oblong for now.
Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 28th day of the month at 14:22Z
Corrected: This observation corrected a previous observation.
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 303)
Storm Number & Year: 04L in 2011
Storm Name: Don (flight in the North Atlantic basin)
Mission Number: 2
Observation Number: 07
A. Time of Center Fix: 28th day of the month at 13:50:10Z
B. Center Fix Coordinates: 23°59'N 89°55'W (23.9833N 89.9167W)
B. Center Fix Location: 414 miles (667 km) to the S (179°) of New Orleans, LA, USA.
C. Minimum Height at Standard Level: 1,442m (4,731ft) at 850mb
D. Estimated (by SFMR or visually) Maximum Surface Wind: 29kts (~ 33.4mph)
E. Location of the Estimated Maximum Surface Wind: 2 nautical miles (2 statute miles) to the SSW (201°) of center fix
F. Maximum Flight Level Wind Inbound: From 81° at 32kts (From the E at ~ 36.8mph)
G. Location of Maximum Flight Level Wind Inbound: 2 nautical miles (2 statute miles) to the NNW (346°) of center fix
H. Minimum Sea Level Pressure: 1001mb (29.56 inHg) - Extrapolated
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 18°C (64°F) at a pressure alt. of 1,523m (4,997ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 26°C (79°F) at a pressure alt. of 1,515m (4,970ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 8°C (46°F)
K. Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Not Available
M. Eye Shape: Not Available
N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
N. Fix Levels (sfc and flt lvl centers are within 5nm of each other): Surface and 850mb
O. Navigation Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 1.5 nautical miles
Remarks Section - Remarks That Were Decoded...
Maximum Flight Level Wind: 52kts (~ 59.8mph) in the east quadrant at 11:57:10Z
Maximum Flight Level Wind Outbound: 38kts (~ 43.7mph) in the southeast quadrant at 14:15:50Z
Sea Level Pressure Extrapolation From: 850mb
Remarks Section - Additional Remarks...
EYE SONDE MEASURED 1004MB WITH 17 KTS SFC WIND
FEEDERBAND CROSSING SE OUTBOUND LEG 70 NM SE OF CTR
COR FOR MAX OUTBOUND FL WIND IN CONVECTIVE BAND
danielw ~ Note:Eye sonde measured 17 knots of wind. This is noted to determine how well the dropsonde was placed. I believe any windspeed below 20 knots is considered an excellent drop.