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Tropical Storm Henri


wxeyeNH
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2 minutes ago, WxWatcher007 said:

Per the overlays, it looks like the center of Henri is just west of the deepest convection. 

What I was thinking when satellite came out this morning, it look as if the convection was nearly entirely out of the convection. So it might be good to slow the hype train for a bit.  

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BULLETIN
Tropical Storm Henri Intermediate Advisory Number 18A
NWS National Hurricane Center Miami FL       AL082021
800 AM EDT Fri Aug 20 2021

...AIR FORCE HURRICANE HUNTERS CURRENTLY INVESTIGATING HENRI...
...STORM SURGE AND HURRICANE WATCHES ARE IN EFFECT FOR PORTIONS OF 
THE NORTHEASTERN UNITED STATES...


SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...30.0N 73.7W
ABOUT 375 MI...600 KM SSE OF CAPE HATTERAS NORTH CAROLINA
ABOUT 800 MI...1290 KM SSW OF NANTUCKET MASSACHUSETTS
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...WNW OR 300 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES
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2 minutes ago, CoastalWx said:

Yeah into RI from about EWB on 6z euro. So west of that is going to have serious water issues. 

Prob good winds for E MA on that run. Going from EWB/PVD to just south of ORH. Someone just NE of that center would prob get some good winds. 

Epic rains prob for CT. 

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Corrected VDM

 

Product: Air Force Vortex Message (URNT12 KNHC)
Corrected: This observation corrected a previously corrected observation.
Transmitted: 20th day of the month at 12:06Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5304
Storm Name: Henri
Storm Number & Year: 08 in 2021 (flight in the North Atlantic basin)
Mission Number: 4
Observation Number: 05 ( See all messages of this type for this mission. )

A. Time of Center Fix: 20th day of the month at 11:41:10Z
B. Center Fix Coordinates: 29.87N 73.65W
B. Center Fix Location: 388 statute miles (624 km) to the SSE (164°) from Cape Hatteras, NC, USA.
C. Minimum Height at Standard Level: 1,439m (4,721ft) at 850mb
D. Minimum Sea Level Pressure: 1000mb (29.53 inHg)
E. Dropsonde Surface Wind at Center: From 275° at 33kts (From the W at 38mph)
F. Eye Character: Not Available
G. Eye Shape: Not Available
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 37kts (42.6mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 54 nautical miles (62 statute miles) to the N (351°) of center fix at 11:24:00Z
J. Maximum Flight Level Wind Inbound: From 85° at 43kts (From the E at 49.5mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 66 nautical miles (76 statute miles) to the NNW/N (349°) of center fix at 11:20:00Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 59kts (67.9mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 47 nautical miles (54 statute miles) to the SE (134°) of center fix at 11:55:00Z
N. Maximum Flight Level Wind Outbound: From 240° at 62kts (From the WSW at 71.3mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 45 nautical miles (52 statute miles) to the SE (134°) of center fix at 11:54:30Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 19°C (66°F) at a pressure alt. of 1,523m (4,997ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 24°C (75°F) at a pressure alt. of 1,520m (4,987ft)
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, Wind, Pressure and Temperature
S. Fix Level: 850mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 1 nautical mile

Remarks Section:
 

Maximum Flight Level Wind: 62kts (~ 71.3mph) which was observed 45 nautical miles (52 statute miles) to the SE (134°) from the flight level center at 11:54:30Z
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Just now, ORH_wxman said:

06z Euro is coming west too. Though the 00z run was pretty far east so not a big surprise. Looks like 06z run is going to be near EWB/PVD. 

 

Just now, CoastalWx said:

Yeah into RI from about EWB on 6z euro. So west of that is going to have serious water issues. 

Good AM AMWx.   I think a track right up Naggy Bay is gaining traction just looking at guidance this AM.  I feel the runs curling into W LI are too aggressive.  Only way I see those occurring is if Henri remains weak and can be impacted more by that trough.  If it becomes a stronger storm, the trough won't have as great an impact.

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4 minutes ago, yoda said:

 

Although I agree it’s exceptionally rare, how can he just cherry pick that one spot on that spacial grid scale? Just completely ignore the 9kts 10-15 miles to the east? 

Probably a fortunate thing Henri will be crawling over those colder SSTs however. 

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4 minutes ago, Baroclinic Zone said:

 

Good AM AMWx.   I think a track right up Naggy Bay is gaining traction just looking at guidance this AM.  I feel the runs curling into W LI are too aggressive.  Only way I see those occurring is if Henri remains weak and can be impacted more by that trough.  If it becomes a stronger storm, the trough won't have as great an impact.

Huh I thought stronger = more tucked in?

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