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Tropical Storm Henri


wxeyeNH
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SE Eyewall dropsonde, so it does look like there is an eye trying to develop. 

 

Product: Air Force Temp Drop (Dropsonde) Message (UZNT13 KNHC)
Transmitted: 21st day of the month at 13:16Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5304
Storm Name: Henri
Storm Number: 08 (flight in the North Atlantic basin)
Mission Number: 10
Observation Number: 11 ( See all messages of this type for this mission. )

Part A...
 

Date: Near the closest hour of 13Z on the 21st day of the month
Highest Mandatory Level For Which Wind Was Reported: 700mb
Coordinates: 33.8N 72.0W
Location: 225 statute miles (362 km) to the ESE (117°) from Cape Hatteras, NC, USA.
Marsden Square: 116 ( About )
 
Surface and Standard Isobaric Surfaces
Level Geo. Height Air Temp. Dew Point Wind Direction Wind Speed
1000mb -27m (-89 ft) This level does not exist in this area of the storm above the surface level.
997mb (29.44 inHg) Surface (Sea Level) 25.8°C (78.4°F) 24.9°C (77°F) 155° (from the SSE) 44 knots (51 mph)
925mb 656m (2,152 ft) 20.8°C (69.4°F) 20.3°C (69°F) 180° (from the S) 71 knots (82 mph)
850mb 1,390m (4,560 ft) 19.2°C (66.6°F) 18.8°C (66°F) 185° (from the S) 61 knots (70 mph)
700mb 3,046m (9,993 ft) 12.0°C (53.6°F) 12.0°C (54°F) 195° (from the SSW) 54 knots (62 mph)

Information About Radiosonde:
- Launch Time: 13:04Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...
 
Dropsonde Location: Dropped in eyewall 135° (SE) from the eye center.

Highest altitude where wind was reported:
- Location: 33.80N 72.01W
- Time: 13:04:02Z

Lowest altitude where wind was reported:
- Location: 33.87N 72.00W
- Time: 13:08:23Z

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 170° (from the S)
- Wind Speed: 58 knots (67 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 185° (from the S)
- Wind Speed: 60 knots (69 mph)
- Depth of Sounding: From 696mb to 996mb

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 161 gpm - 11 gpm (528 geo. feet - 36 geo. feet)
- Wind Direction: 160° (from the SSE)
- Wind Speed: 54 knots (62 mph)

Sounding Software Version: AEV 30404
 

Part B: Data for Significant Levels...
 

Significant Temperature And Relative Humidity Levels
Level Air Temperature Dew Point
997mb (Surface) 25.8°C (78.4°F) 24.9°C (77°F)
935mb 21.2°C (70.2°F) 20.6°C (69°F)
850mb 19.2°C (66.6°F) 18.8°C (66°F)
777mb 15.8°C (60.4°F) 15.8°C (60°F)
764mb 16.2°C (61.2°F) 14.2°C (58°F)
697mb Unavailable
 
Significant Wind Levels
Level Wind Direction Wind Speed
997mb (Surface) 155° (from the SSE) 44 knots (51 mph)
995mb 155° (from the SSE) 42 knots (48 mph)
993mb 155° (from the SSE) 50 knots (58 mph)
979mb 165° (from the SSE) 62 knots (71 mph)
971mb 165° (from the SSE) 58 knots (67 mph)
963mb 170° (from the S) 62 knots (71 mph)
951mb 180° (from the S) 58 knots (67 mph)
942mb 180° (from the S) 68 knots (78 mph)
933mb 180° (from the S) 71 knots (82 mph)
921mb 180° (from the S) 72 knots (83 mph)
901mb 180° (from the S) 64 knots (74 mph)
887mb 180° (from the S) 67 knots (77 mph)
863mb 185° (from the S) 58 knots (67 mph)
850mb 185° (from the S) 61 knots (70 mph)
696mb 195° (from the SSW) 55 knots (63 mph)
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1 minute ago, CoastalWx said:

I mean that fine is silly after a certain point. What if a 38 comes? It’s not Eversource that is an issue. I get it for a TS, but eventually we will be knocked into the Stone Age and I wouldn’t blame grid companies. 

Yea. The new infrastructure bill isn’t enough to move us forward either. If we don’t update our power grids and our power source…eventually DIT will get his wish of months in darkness and NewEng peeps smelling like peasant orgies from the 1600s. 

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4 minutes ago, CoastalWx said:

Something to think about. As this goes ET near landfall or shortly after, we may see dry air and breaks developing in the overcast. If that happens we may mix some stronger winds down east of track. 

You can see the 925 windfield tries to expand at He last second while its weakening. 

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4 minutes ago, Bostonseminole said:

you can see it on sat.. comes and goes

Yep. Eye confirmed. Open to the N. 

 

Product: NOAA Vortex Message (URNT12 KWBC)
Transmitted: 21st day of the month at 13:21Z
Agency: National Oceanic and Atmospheric Administration (NOAA)
Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)
Storm Name: Henri
Storm Number & Year: 08 in 2021 (flight in the North Atlantic basin)
Mission Number: 9
Observation Number: 20 ( See all messages of this type for this mission. )

A. Time of Center Fix: 21st day of the month at 12:44:20Z
B. Center Fix Coordinates: 33.73N 72.28W
B. Center Fix Location: 213 statute miles (343 km) to the ESE (120°) from Cape Hatteras, NC, USA.
C. Minimum Height at Standard Level: Not Available
D. Minimum Sea Level Pressure: 993mb (29.33 inHg)
E. Dropsonde Surface Wind at Center: From 280° at 21kts (From the W at 24mph)
F. Eye Character: Open in the north
G. Eye Shape & Diameter: Circular with a diameter of 15 nautical miles (17 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 58kts (66.7mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 23 nautical miles (26 statute miles) to the NE (44°) of center fix at 12:38:28Z
J. Maximum Flight Level Wind Inbound: From 195° at 62kts (From the SSW at 71.3mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 92 nautical miles (106 statute miles) to the E/ESE (101°) of center fix at 12:00:43Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 56kts (64.4mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 9 nautical miles to the SW (228°) of center fix at 12:46:41Z
N. Maximum Flight Level Wind Outbound: From 298° at 50kts (From the WNW at 57.5mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 19 nautical miles (22 statute miles) to the SW (224°) of center fix at 12:49:28Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 15°C (59°F) at a pressure alt. of 2,459m (8,068ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 17°C (63°F) at a pressure alt. of 2,454m (8,051ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 11°C (52°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Pressure and Temperature
S. Fix Level: Other - Not surface, 1500ft, 925mb, 850mb, 700mb, 500mb, 400mb, 300mb or 200mb
T. Navigational Fix Accuracy: 0.01 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section:
 

Maximum Flight Level Wind: 65kts (~ 74.8mph) which was observed 71 nautical miles (82 statute miles) to the SE (140°) from the flight level center at 11:52:24Z

 

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51 minutes ago, Sev said:

Next question.  Will the ferries be running?  

They’re more than likely cancelling all of Sunday and maybe into Monday. Same with block island. Even if the storm isn’t dead on they may cancel just due to rough seas alone. Some days they’re up quicker it might be a wait and see 

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4 minutes ago, WxWatcher007 said:

Yep. Eye confirmed. Open to the N. 

 

Product: NOAA Vortex Message (URNT12 KWBC)
Transmitted: 21st day of the month at 13:21Z
Agency: National Oceanic and Atmospheric Administration (NOAA)
Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)
Storm Name: Henri
Storm Number & Year: 08 in 2021 (flight in the North Atlantic basin)
Mission Number: 9
Observation Number: 20 ( See all messages of this type for this mission. )

A. Time of Center Fix: 21st day of the month at 12:44:20Z
B. Center Fix Coordinates: 33.73N 72.28W
B. Center Fix Location: 213 statute miles (343 km) to the ESE (120°) from Cape Hatteras, NC, USA.
C. Minimum Height at Standard Level: Not Available
D. Minimum Sea Level Pressure: 993mb (29.33 inHg)
E. Dropsonde Surface Wind at Center: From 280° at 21kts (From the W at 24mph)
F. Eye Character: Open in the north
G. Eye Shape & Diameter: Circular with a diameter of 15 nautical miles (17 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 58kts (66.7mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 23 nautical miles (26 statute miles) to the NE (44°) of center fix at 12:38:28Z
J. Maximum Flight Level Wind Inbound: From 195° at 62kts (From the SSW at 71.3mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 92 nautical miles (106 statute miles) to the E/ESE (101°) of center fix at 12:00:43Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 56kts (64.4mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 9 nautical miles to the SW (228°) of center fix at 12:46:41Z
N. Maximum Flight Level Wind Outbound: From 298° at 50kts (From the WNW at 57.5mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 19 nautical miles (22 statute miles) to the SW (224°) of center fix at 12:49:28Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 15°C (59°F) at a pressure alt. of 2,459m (8,068ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 17°C (63°F) at a pressure alt. of 2,454m (8,051ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 11°C (52°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Pressure and Temperature
S. Fix Level: Other - Not surface, 1500ft, 925mb, 850mb, 700mb, 500mb, 400mb, 300mb or 200mb
T. Navigational Fix Accuracy: 0.01 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section:
 

Maximum Flight Level Wind: 65kts (~ 74.8mph) which was observed 71 nautical miles (82 statute miles) to the SE (140°) from the flight level center at 11:52:24Z

 

Mission 10 showing 30sec average of 78 knots. 

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46 minutes ago, IowaStorm05 said:

I’m not quite pulling the trigger on evacuating the region, I’m betting on shelter in place.

But, I am taking this seriously. Last I checked minutes ago I am in Willimantic and I am in the NW flank of the storm. That is rain. 
 

with Elsa it brought our river, which I live IN, by the way, within a few feet of our window and it raced past.

Yes I live IN the river. Not near it. TEXTILE mill.

 

 

Beautiful building 

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There is some convection trying to wrap around the center.  But, this shows signs of what happens when troughs interact. That kidney bean and lopsided area of convection indicative of some shear and dry air. It doesn’t mean and can’t gain a little steam, but that it’s fighting some hostility.  

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5 minutes ago, TauntonBlizzard2013 said:

People are whistling past the graveyard with this. It doesn’t look like a very impressive system. The want for a significant and historic event is clouding a lot of people’s judgment 

This is most likely  going to be upper 980s to low 990s storm when it makes landfall. Flooding should be the main concern.

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5 minutes ago, Newman said:

Interesting considering a Hurricane Hunter just posted this on Twitter LOL

 

Wasn't he out there yesterday? It looked really rough during those missions. 

3 minutes ago, TauntonBlizzard2013 said:

People are whistling past the graveyard with this. It doesn’t look like a very impressive system. The want for a significant and historic event is clouding a lot of people’s judgment 

I'm not sure what you were expecting, but borderline cat 1 was the prediction for right now and that's exactly what this looks like. I can't speak for others but I'm actually taking time to present the data and while not very impressive it is squarely in the middle of the forecasted intensity for this time and environment. 

2 minutes ago, CoastalWx said:

There is some convection trying to wrap around the center.  But, this shows signs of what happens when troughs interact. That kidney bean and lopsided area of convection indicative of some shear and dry air. It doesn’t mean and can’t gain a little steam, but that it’s fighting some hostility.  

This. Two things can be true at the same time. It's still fighting off some hostility and has a lot of work to do but it's much better organized than it was yesterday. I'm really not sure what people were expecting at 9:30am on Saturday. 

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Latest VDM for those that care lol

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 21st day of the month at 13:36Z
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: 10
Observation Number: 09 ( See all messages of this type for this mission. )

A. Time of Center Fix: 21st day of the month at 13:00:40Z
B. Center Fix Coordinates: 33.84N 72.20W
B. Center Fix Location: 213 statute miles (343 km) to the ESE (117°) from Cape Hatteras, NC, USA.
C. Minimum Height at Standard Level: 3,043m (9,984ft) at 700mb
D. Minimum Sea Level Pressure: 993mb (29.33 inHg)
E. Dropsonde Surface Wind at Center (Undecoded): NA
F. Eye Character: Open from the north to the northwest
G. Eye Shape & Diameter: Circular with a diameter of 24 nautical miles (28 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 27kts (31.1mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 16 nautical miles (18 statute miles) to the WNW (299°) of center fix at 12:55:30Z
J. Maximum Flight Level Wind Inbound: From 17° at 22kts (From the NNE at 25.3mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 18 nautical miles (21 statute miles) to the WNW (300°) of center fix at 12:55:00Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 55kts (63.3mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 57 nautical miles (66 statute miles) to the SE (127°) of center fix at 13:18:30Z
N. Maximum Flight Level Wind Outbound: From 215° at 82kts (From the SW at 94.4mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 61 nautical miles (70 statute miles) to the SE (128°) of center fix at 13:20:00Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 7°C (45°F) at a pressure alt. of 3,047m (9,997ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 12°C (54°F) at a pressure alt. of 3,041m (9,977ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 10°C (50°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 Level: 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section - Remarks That Were Decoded...
 

Maximum Flight Level Wind: 82kts (~ 94.4mph) which was observed 61 nautical miles (70 statute miles) to the SE (128°) from the flight level center at 13:20:00Z


Remarks Section - Additional Remarks...
 

10-m wind dropsonde wind unavailable.
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