ATL: TROPICAL STORM BILL (03L)

[Gustywind]

Call it BIG BABY BILL Go fishing little boy

[Thunder44]

Drop 13:

Code: Select all

Product: NOAA Temp Drop (Dropsonde) Message (UZNT13 KWBC)
Transmitted: 18th day of the month at 11:57Z
Aircraft: Gulfstream IV-SP (G-IV) (Reg. Num. N49RF)
Storm Number: 03
Storm Name: Bill (in the North Atlantic basin)
Mission: Non-Tasked Mission
Observation Number: 13

Part A...

Date: Near the closest hour of 12Z on the 18th day of the month
Highest Mandatory Level For Which Wind Was Reported: 200mb
Coordinates: 19.1N 46.7W
Location: 1268 miles (2041 km) to the E (88°) from San Juan, Puerto Rico (USA).
Marsden Square: 041 (About)


Level
Geo. Height
Air Temp.
Dew Point
Wind Direction
Wind Speed
1013mb (29.91 inHg)
Sea Level (Surface)
25.0°C (77.0°F)
24.3°C (75.7°F)
Unavailable
1000mb
116m (381 ft)
24.2°C (75.6°F)
24.0°C (75.2°F)
90° (from the E)
27 knots (31 mph)
925mb
797m (2,615 ft)
20.8°C (69.4°F)
20.4°C (68.7°F)
105° (from the ESE)
31 knots (36 mph)
850mb
1,528m (5,013 ft)
17.4°C (63.3°F)
17.3°C (63.1°F)
110° (from the ESE)
22 knots (25 mph)
700mb
3,172m (10,407 ft)
10.0°C (50.0°F)
6.7°C (44.1°F)
130° (from the SE)
29 knots (33 mph)
500mb
5,890m (19,324 ft)
-6.1°C (21.0°F)
-7.2°C (19.0°F)
135° (from the SE)
32 knots (37 mph)
400mb
7,610m (24,967 ft)
-15.3°C (4.5°F)
Approximately -21°C (-6°F)
125° (from the SE)
25 knots (29 mph)
300mb
9,720m (31,890 ft)
-30.1°C (-22.2°F)
-34.9°C (-30.8°F)
165° (from the SSE)
21 knots (24 mph)
250mb
10,990m (36,056 ft)
-40.5°C (-40.9°F)
-45.0°C (-49.0°F)
125° (from the SE)
11 knots (13 mph)
200mb
12,470m (40,912 ft)
-53.5°C (-64.3°F)
Reading usually unavailable when air temperature is below -40°C (-40°F)
205° (from the SSW)
19 knots (22 mph)


Information About Radiosonde:
- Launch Time: 11:32Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...
Splash Location: 19.12N 46.77W
Splash Time: 11:47Z

Release Location: 19.06N 46.7W
Release Time: 11:32:42Z

Splash Location: 19.12N 46.77W
Splash Time: 11:47:00Z

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 90° (from the E)
- Wind Speed: 30 knots (35 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 135° (from the SE)
- Wind Speed: 22 knots (25 mph)
- Depth of Sounding: From 160mb to 1012mb

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 162 gpm - 12 gpm (531 geo. feet - 39 geo. feet)
- Wind Direction: 90° (from the E)
- Wind Speed: 27 knots (31 mph)

Sounding Software Version: AEV 20801

Height of the last reported wind: 13 geopotential meters

Part B: Data For Significant Levels...


Significant Temperature And Relative Humidity Levels...
Level
Air Temperature
Dew Point
1013mb (Surface)
25.0°C (77.0°F)
24.3°C (75.7°F)
850mb
17.4°C (63.3°F)
17.3°C (63.1°F)
781mb
14.6°C (58.3°F)
14.5°C (58.1°F)
772mb
13.6°C (56.5°F)
11.5°C (52.7°F)
759mb
13.0°C (55.4°F)
12.7°C (54.9°F)
749mb
12.8°C (55.0°F)
8.5°C (47.3°F)
729mb
12.2°C (54.0°F)
7.5°C (45.5°F)
505mb
-5.9°C (21.4°F)
-6.6°C (20.1°F)
458mb
-8.7°C (16.3°F)
-11.1°C (12.0°F)
404mb
-14.7°C (5.5°F)
Approximately -22°C (-8°F)
379mb
-18.3°C (-0.9°F)
-21.4°C (-6.5°F)
342mb
-23.3°C (-9.9°F)
-25.6°C (-14.1°F)
330mb
-24.7°C (-12.5°F)
-28.8°C (-19.8°F)
306mb
-28.9°C (-20.0°F)
-32.7°C (-26.9°F)
292mb
-31.3°C (-24.3°F)
Approximately -38°C (-36°F)
273mb
-35.5°C (-31.9°F)
-39.3°C (-38.7°F)
241mb
-42.5°C (-44.5°F)
-47.2°C (-53.0°F)
204mb
-52.3°C (-62.1°F)
Approximately -62°C (-80°F)
190mb
-56.5°C (-69.7°F)
Reading usually unavailable when air temperature is below -40°C (-40°F)



Significant Wind Levels...
Level
Wind Direction
Wind Speed
1013mb (Surface)
Unavailable
1012mb
85° (from the E)
29 knots (33 mph)
893mb
110° (from the ESE)
31 knots (36 mph)
884mb
115° (from the ESE)
21 knots (24 mph)
850mb
110° (from the ESE)
22 knots (25 mph)
759mb
105° (from the ESE)
26 knots (30 mph)
707mb
130° (from the SE)
30 knots (35 mph)
578mb
140° (from the SE)
36 knots (41 mph)
454mb
140° (from the SE)
27 knots (31 mph)
396mb
125° (from the SE)
25 knots (29 mph)
303mb
165° (from the SSE)
21 knots (24 mph)
268mb
155° (from the SSE)
18 knots (21 mph)
249mb
120° (from the ESE)
10 knots (12 mph)
216mb
190° (from the S)
11 knots (13 mph)
211mb
210° (from the SSW)
15 knots (17 mph)
178mb
220° (from the SW)
17 knots (20 mph)
173mb
230° (from the SW)
10 knots (12 mph)

The highest wind observed in the "Significant Wind Levels" section is noted in bold.

---

Dropsonde Diagram:

[knotimpaired]

Well, I'll go back to sleep when that curve starts really going on...

I am in that camp too Mj.Yes,it passed just north of the 15N-50W box but until it passes the latitud of the most northern island I wont be tranquil.I cant forget Luis (not me but the hurricane) as he loved the 17N line.

I am with MJ and Luis.

Wake me up if I need to worry about it.

[Emmett_Brown]

Judging from this steering currents map, I wouldn't be surprised to see Bill gain some longitude today as it goes by the weakness to his north:

[Thunder44]

Drop 14. Still heading NE:

Code: Select all

Product: NOAA Temp Drop (Dropsonde) Message (UZNT13 KWBC)
Transmitted: 18th day of the month at 12:15Z
Aircraft: Gulfstream IV-SP (G-IV) (Reg. Num. N49RF)
Storm Number: 03
Storm Name: Bill (in the North Atlantic basin)
Mission: Non-Tasked Mission
Observation Number: 14

Part A...

Date: Near the closest hour of 12Z on the 18th day of the month
Highest Mandatory Level For Which Wind Was Reported: 200mb
Coordinates: 20.0N 44.7W
Location: 1399 miles (2251 km) to the E (85°) from San Juan, Puerto Rico (USA).
Marsden Square: 041 (About)


Level
Geo. Height
Air Temp.
Dew Point
Wind Direction
Wind Speed
1016mb (30.00 inHg)
Sea Level (Surface)
26.0°C (78.8°F)
23.3°C (73.9°F)
90° (from the E)
18 knots (21 mph)
1000mb
136m (446 ft)
24.8°C (76.6°F)
23.0°C (73.4°F)
85° (from the E)
19 knots (22 mph)
925mb
817m (2,680 ft)
20.4°C (68.7°F)
17.8°C (64.0°F)
100° (from the E)
21 knots (24 mph)
850mb
1,545m (5,069 ft)
17.0°C (62.6°F)
15.3°C (59.5°F)
105° (from the ESE)
16 knots (18 mph)
700mb
3,186m (10,453 ft)
9.8°C (49.6°F)
Approximately 2°C (36°F)
135° (from the SE)
16 knots (18 mph)
500mb
5,910m (19,390 ft)
-5.1°C (22.8°F)
Approximately -11°C (12°F)
115° (from the ESE)
13 knots (15 mph)
400mb
7,620m (25,000 ft)
-16.1°C (3.0°F)
-19.5°C (-3.1°F)
55° (from the NE)
13 knots (15 mph)
300mb
9,730m (31,923 ft)
-30.7°C (-23.3°F)
-32.4°C (-26.3°F)
295° (from the WNW)
3 knots (3 mph)
250mb
11,000m (36,089 ft)
-40.9°C (-41.6°F)
Approximately -50°C (-58°F)
325° (from the NW)
4 knots (5 mph)
200mb
12,480m (40,945 ft)
-53.3°C (-63.9°F)
Reading usually unavailable when air temperature is below -40°C (-40°F)
270° (from the W)
13 knots (15 mph)


Information About Radiosonde:
- Launch Time: 11:50Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...
Splash Location: 19.98N 44.71W
Splash Time: 12:04Z

Release Location: 19.97N 44.69W
Release Time: 11:50:01Z

Splash Location: 19.98N 44.71W

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 95° (from the E)
- Wind Speed: 19 knots (22 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 120° (from the ESE)
- Wind Speed: 5 knots (6 mph)
- Depth of Sounding: From 160mb to 1014mb

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: 85° (from the E)
- Wind Speed: 19 knots (22 mph)

Sounding Software Version: AEV 20801

Rest of remarks section: 120 425 (Our system could not determine how to decode this text.)

Part B: Data For Significant Levels...


Significant Temperature And Relative Humidity Levels...
Level
Air Temperature
Dew Point
1016mb (Surface)
26.0°C (78.8°F)
23.3°C (73.9°F)
957mb
21.8°C (71.2°F)
20.4°C (68.7°F)
946mb
21.6°C (70.9°F)
18.3°C (64.9°F)
850mb
17.0°C (62.6°F)
15.3°C (59.5°F)
752mb
13.0°C (55.4°F)
8.2°C (46.8°F)
723mb
11.2°C (52.2°F)
Approximately -2°C (28°F)
708mb
10.2°C (50.4°F)
Approximately 3°C (37°F)
647mb
7.0°C (44.6°F)
Approximately -7°C (19°F)
627mb
5.2°C (41.4°F)
0.5°C (32.9°F)
596mb
2.4°C (36.3°F)
-1.6°C (29.1°F)
582mb
1.2°C (34.2°F)
Approximately -6°C (21°F)
557mb
-1.1°C (30.0°F)
-3.8°C (25.2°F)
501mb
-4.9°C (23.2°F)
Approximately -10°C (14°F)
469mb
-8.5°C (16.7°F)
-12.0°C (10.4°F)
457mb
-9.3°C (15.3°F)
Approximately -15°C (5°F)
452mb
-9.7°C (14.5°F)
Approximately -23°C (-9°F)
431mb
-12.7°C (9.1°F)
-15.9°C (3.4°F)
407mb
-15.3°C (4.5°F)
Approximately -21°C (-6°F)
388mb
-17.5°C (0.5°F)
-20.3°C (-4.5°F)
375mb
-18.1°C (-0.6°F)
Approximately -24°C (-11°F)
297mb
-31.5°C (-24.7°F)
-33.1°C (-27.6°F)
280mb
-34.3°C (-29.7°F)
Approximately -45°C (-49°F)
244mb
-42.5°C (-44.5°F)
Approximately -52°C (-62°F)
218mb
-48.5°C (-55.3°F)
-53.2°C (-63.8°F)
206mb
-51.5°C (-60.7°F)
Approximately -58°C (-72°F)



Significant Wind Levels...
Level
Wind Direction
Wind Speed
1016mb (Surface)
90° (from the E)
18 knots (21 mph)
948mb
105° (from the ESE)
22 knots (25 mph)
908mb
95° (from the E)
19 knots (22 mph)
886mb
115° (from the ESE)
15 knots (17 mph)
864mb
110° (from the ESE)
13 knots (15 mph)
850mb
105° (from the ESE)
16 knots (18 mph)
814mb
145° (from the SE)
12 knots (14 mph)
790mb
125° (from the SE)
13 knots (15 mph)
768mb
140° (from the SE)
13 knots (15 mph)
746mb
120° (from the ESE)
13 knots (15 mph)
706mb
140° (from the SE)
15 knots (17 mph)
685mb
130° (from the SE)
14 knots (16 mph)
666mb
160° (from the SSE)
15 knots (17 mph)
642mb
150° (from the SSE)
14 knots (16 mph)
631mb
160° (from the SSE)
16 knots (18 mph)
588mb
130° (from the SE)
18 knots (21 mph)
545mb
125° (from the SE)
14 knots (16 mph)
529mb
140° (from the SE)
13 knots (15 mph)
502mb
115° (from the ESE)
13 knots (15 mph)
486mb
130° (from the SE)
13 knots (15 mph)
466mb
115° (from the ESE)
12 knots (14 mph)
437mb
120° (from the ESE)
10 knots (12 mph)
395mb
50° (from the NE)
13 knots (15 mph)
342mb
300° (from the WNW)
1 knots (1 mph)
213mb
295° (from the WNW)
10 knots (12 mph)
194mb
265° (from the W)
13 knots (15 mph)
184mb
290° (from the WNW)
11 knots (13 mph)
168mb
285° (from the WNW)
15 knots (17 mph)

The highest wind observed in the "Significant Wind Levels" section is noted in bold.

---

[Dean4Storms]

Judging from this steering currents map, I wouldn't be surprised to see Bill gain some longitude today as it goes by the weakness to his north:

I'm betting you meant latitude?

[Gustywind]

Approaching the Leewards islands latitude...

DATE/TIME LAT LON CLASSIFICATION STORM
18/1145 UTC 15.7N 50.2W T5.0/5.0 BILL

[storms NC]

There is a ULL to the north of Bill now that is pushing to the south. That is what is keeping Bill from truning north right now. Till he is past that it will be more west with stair steps to the north. WNW I don't see it turning till it get a little closer to the islands then stoot up from there.

[Thunder44]

Drop 15:

Code: Select all

Product: NOAA Temp Drop (Dropsonde) Message (UZNT13 KWBC)
Transmitted: 18th day of the month at 12:26Z
Aircraft: Gulfstream IV-SP (G-IV) (Reg. Num. N49RF)
Storm Number: 03
Storm Name: Bill (in the North Atlantic basin)
Mission: Non-Tasked Mission
Observation Number: 15

Part A...

Date: Near the closest hour of 12Z on the 18th day of the month
Highest Mandatory Level For Which Wind Was Reported: 200mb
Coordinates: 20.4N 43.1W
Location: 1344 miles (2163 km) to the WNW (286°) from Praia, Cape Verde.
Marsden Square: 077 (About)


Level
Geo. Height
Air Temp.
Dew Point
Wind Direction
Wind Speed
1017mb (30.03 inHg)
Sea Level (Surface)
26.0°C (78.8°F)
22.6°C (72.7°F)
Unavailable
1000mb
145m (476 ft)
24.6°C (76.3°F)
22.1°C (71.8°F)
105° (from the ESE)
15 knots (17 mph)
925mb
824m (2,703 ft)
19.8°C (67.6°F)
17.1°C (62.8°F)
110° (from the ESE)
17 knots (20 mph)
850mb
1,551m (5,089 ft)
17.0°C (62.6°F)
13.5°C (56.3°F)
85° (from the E)
13 knots (15 mph)
700mb
3,190m (10,466 ft)
10.0°C (50.0°F)
Approximately 2°C (36°F)
125° (from the SE)
19 knots (22 mph)
500mb
5,910m (19,390 ft)
-5.5°C (22.1°F)
Approximately -32°C (-26°F)
130° (from the SE)
11 knots (13 mph)
400mb
7,630m (25,033 ft)
-15.5°C (4.1°F)
Approximately -50°C (-58°F)
75° (from the ENE)
14 knots (16 mph)
300mb
9,730m (31,923 ft)
-31.1°C (-24.0°F)
Approximately -59°C (-74°F)
25° (from the NNE)
8 knots (9 mph)
250mb
11,000m (36,089 ft)
-40.9°C (-41.6°F)
Approximately -56°C (-69°F)
20° (from the NNE)
7 knots (8 mph)
200mb
12,480m (40,945 ft)
-52.9°C (-63.2°F)
Reading usually unavailable when air temperature is below -40°C (-40°F)
320° (from the NW)
14 knots (16 mph)


Information About Radiosonde:
- Launch Time: 12:04Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...
Splash Location: 20.42N 43.17W
Splash Time: 12:19Z

Release Location: 20.41N 43.13W
Release Time: 12:04:33Z

Splash Location: 20.42N 43.17W
Splash Time: 12:19:07Z

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 105° (from the ESE)
- Wind Speed: 14 knots (16 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 80° (from the E)
- Wind Speed: 7 knots (8 mph)
- Depth of Sounding: From 153mb to 1014mb

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 169 gpm - 19 gpm (554 geo. feet - 62 geo. feet)
- Wind Direction: 100° (from the E)
- Wind Speed: 14 knots (16 mph)

Sounding Software Version: AEV 20801

Height of the last reported wind: 21 geopotential meters

Part B: Data For Significant Levels...


Significant Temperature And Relative Humidity Levels...
Level
Air Temperature
Dew Point
1017mb (Surface)
26.0°C (78.8°F)
22.6°C (72.7°F)
961mb
21.2°C (70.2°F)
20.9°C (69.6°F)
919mb
19.6°C (67.3°F)
16.3°C (61.3°F)
850mb
17.0°C (62.6°F)
13.5°C (56.3°F)
832mb
16.0°C (60.8°F)
11.8°C (53.2°F)
822mb
15.8°C (60.4°F)
Approximately 9°C (48°F)
814mb
16.6°C (61.9°F)
Approximately 0°C (32°F)
803mb
16.4°C (61.5°F)
Approximately -6°C (21°F)
773mb
15.0°C (59.0°F)
Approximately -7°C (19°F)
761mb
14.0°C (57.2°F)
Approximately 5°C (41°F)
734mb
11.8°C (53.2°F)
Approximately 5°C (41°F)
670mb
8.6°C (47.5°F)
Approximately -1°C (30°F)
662mb
7.8°C (46.0°F)
Approximately 1°C (34°F)
620mb
4.6°C (40.3°F)
Approximately -1°C (30°F)
595mb
3.0°C (37.4°F)
Approximately -8°C (18°F)
564mb
-0.7°C (30.7°F)
Approximately -10°C (14°F)
544mb
-1.3°C (29.7°F)
Approximately -24°C (-11°F)
487mb
-6.7°C (19.9°F)
Approximately -39°C (-38°F)
449mb
-11.3°C (11.7°F)
Approximately -30°C (-22°F)
390mb
-16.9°C (1.6°F)
Approximately -50°C (-58°F)
371mb
-18.3°C (-0.9°F)
Approximately -34°C (-29°F)
342mb
-23.1°C (-9.6°F)
Approximately -36°C (-33°F)
320mb
-27.3°C (-17.1°F)
Approximately -55°C (-67°F)
260mb
-38.5°C (-37.3°F)
Approximately -56°C (-69°F)
242mb
-42.9°C (-45.2°F)
Approximately -54°C (-65°F)
201mb
-52.7°C (-62.9°F)
Approximately -67°C (-89°F)



Significant Wind Levels...
Level
Wind Direction
Wind Speed
1017mb (Surface)
Unavailable
1014mb
95° (from the E)
12 knots (14 mph)
997mb
105° (from the ESE)
14 knots (16 mph)
939mb
105° (from the ESE)
17 knots (20 mph)
872mb
100° (from the E)
14 knots (16 mph)
850mb
85° (from the E)
13 knots (15 mph)
665mb
135° (from the SE)
23 knots (26 mph)
567mb
125° (from the SE)
27 knots (31 mph)
537mb
130° (from the SE)
16 knots (18 mph)
526mb
115° (from the ESE)
17 knots (20 mph)
498mb
135° (from the SE)
10 knots (12 mph)
485mb
105° (from the ESE)
11 knots (13 mph)
468mb
115° (from the ESE)
11 knots (13 mph)
445mb
105° (from the ESE)
5 knots (6 mph)
439mb
65° (from the ENE)
10 knots (12 mph)
410mb
90° (from the E)
14 knots (16 mph)
381mb
50° (from the NE)
12 knots (14 mph)
373mb
20° (from the NNE)
15 knots (17 mph)
364mb
10° (from the N)
16 knots (18 mph)
340mb
340° (from the NNW)
11 knots (13 mph)
246mb
15° (from the NNE)
6 knots (7 mph)
216mb
320° (from the NW)
10 knots (12 mph)
168mb
320° (from the NW)
21 knots (24 mph)
161mb
335° (from the NNW)
25 knots (29 mph)

The highest wind observed in the "Significant Wind Levels" section is noted in bold.

---

[Gustywind]

I see your eye Bill...

[gatorcane]

The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.

Folks, the model support indicating it will miss the Leewards is in such excellent agreement not sure we need to keep mentioning or hinting at any possibilities it will move much more west than where the NHC has it going, at least within the next 3-4 days or so -- and I even think that 3-5 day cone should shift more to the right over time as well. There really is no debate with the fact it will miss the Leewards to the north far enough so that all the winds and heavy rain will be far to the north. Additionally I will say those in Florida are safe and probably anywhere south of North Carolina --- very safe from Bill.

If this system can just miss Bermuda and landmasses upstream from that (a pretty decent chance but still not certain), we could have the perfect Atlantic system to track -- a major churning harmlessly in the Atlantic.

[KWT]

Bill is looking very good right now, still seems to be some uncertainty over the impacts this could have in Bermuda, the models still shifting either side of the island.

[btangy]

http://cimss.ssec.wisc.edu/tropic2/real-time/adt/03L-list.txt

according to ADT pressure has dropped like a rock in the past few hrs.
991MB at 0345 utc to 955MB at 1045utc
thats 36MB in 7 hrs! i know its just an estimate but thats a hefty drop, and if that eye clears out and starts shrinking the pressure could drop alot more. i could see it getting down to the 920's. its a big storm so the winds might not be as strong as the would for a smaller system with the same pressure. very impressive, starting to look like a major with nice symetrical convection.

The ADT algorithm has a tendency to jump suddenly when an eye emerges. It doesn't mean Bill has actually strengthened almost 30 knots in 2 hours, though it's definitely on the upswing right now. Finally starting to taste those warmer waters.

[WmE]

Bill is looking very good right now, still seems to be some uncertainty over the impacts this could have in Bermuda, the models still shifting either side of the island.

Yeah very nice looking hurricane. I'd estimate the eye diamater to be around 40 nm, pretty large eye.

[Meso]

The 12z BAM models have changed a bit and now show a very sharp right turn near the end of the period, I wonder if they see the trough moving quicker and being further east at that time. Should that materialize and Bill makes it into the weakness it's only threat could be Bermuda.

[deltadog03]

Ya, that weakness/ little spin is def. droping down on him quickly

[Thunder44]

Drop 16. Turning back around:

Code: Select all

Product: NOAA Temp Drop (Dropsonde) Message (UZNT13 KWBC)
Transmitted: 18th day of the month at 12:55Z
Aircraft: Gulfstream IV-SP (G-IV) (Reg. Num. N49RF)
Storm Number: 03
Storm Name: Bill (in the North Atlantic basin)
Mission: Non-Tasked Mission
Observation Number: 16

Part A...

Date: Near the closest hour of 12Z on the 18th day of the month
Highest Mandatory Level For Which Wind Was Reported: 200mb
Coordinates: 19.0N 44.0W
Location: 1383 miles (2226 km) to the WNW (282°) from Praia, Cape Verde.
Marsden Square: 041 (About)


Level
Geo. Height
Air Temp.
Dew Point
Wind Direction
Wind Speed
1015mb (29.97 inHg)
Sea Level (Surface)
26.0°C (78.8°F)
23.7°C (74.7°F)
110° (from the ESE)
17 knots (20 mph)
1000mb
131m (430 ft)
24.8°C (76.6°F)
23.0°C (73.4°F)
105° (from the ESE)
19 knots (22 mph)
925mb
813m (2,667 ft)
21.0°C (69.8°F)
18.9°C (66.0°F)
105° (from the ESE)
14 knots (16 mph)
850mb
1,541m (5,056 ft)
16.6°C (61.9°F)
14.9°C (58.8°F)
135° (from the SE)
15 knots (17 mph)
700mb
3,182m (10,440 ft)
10.4°C (50.7°F)
Approximately 2°C (36°F)
120° (from the ESE)
13 knots (15 mph)
500mb
5,900m (19,357 ft)
-5.9°C (21.4°F)
Approximately -14°C (7°F)
110° (from the ESE)
15 knots (17 mph)
400mb
7,620m (25,000 ft)
-16.3°C (2.7°F)
Approximately -22°C (-8°F)
55° (from the NE)
11 knots (13 mph)
300mb
9,730m (31,923 ft)
-30.9°C (-23.6°F)
-33.6°C (-28.5°F)
290° (from the WNW)
6 knots (7 mph)
250mb
10,990m (36,056 ft)
-41.1°C (-42.0°F)
Approximately -52°C (-62°F)
345° (from the NNW)
12 knots (14 mph)
200mb
12,470m (40,912 ft)
-52.9°C (-63.2°F)
Reading usually unavailable when air temperature is below -40°C (-40°F)
325° (from the NW)
15 knots (17 mph)


Information About Radiosonde:
- Launch Time: 12:17Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...
Splash Location: 19.03N 44.05W
Splash Time: 12:32Z

Release Location: 19.03N 44.02W
Release Time: 12:17:47Z

Splash Location: 19.03N 44.05W

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 105° (from the ESE)
- Wind Speed: 19 knots (22 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 75° (from the ENE)
- Wind Speed: 6 knots (7 mph)
- Depth of Sounding: From 152mb to 1014mb

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 157 gpm - 7 gpm (515 geo. feet - 23 geo. feet)
- Wind Direction: 105° (from the ESE)
- Wind Speed: 19 knots (22 mph)

Sounding Software Version: AEV 20801

Rest of remarks section: 123 207 (Our system could not determine how to decode this text.)

Part B: Data For Significant Levels...


Significant Temperature And Relative Humidity Levels...
Level
Air Temperature
Dew Point
1015mb (Surface)
26.0°C (78.8°F)
23.7°C (74.7°F)
850mb
16.6°C (61.9°F)
14.9°C (58.8°F)
757mb
13.2°C (55.8°F)
8.8°C (47.8°F)
742mb
12.8°C (55.0°F)
Approximately 4°C (39°F)
723mb
11.4°C (52.5°F)
Approximately 6°C (43°F)
704mb
10.6°C (51.1°F)
Approximately 3°C (37°F)
674mb
8.0°C (46.4°F)
4.1°C (39.4°F)
615mb
4.2°C (39.6°F)
-0.7°C (30.7°F)
574mb
-0.3°C (31.5°F)
-2.1°C (28.2°F)
546mb
-2.1°C (28.2°F)
Approximately -8°C (18°F)
539mb
-2.7°C (27.1°F)
-5.2°C (22.6°F)
526mb
-3.3°C (26.1°F)
Approximately -9°C (16°F)
512mb
-4.7°C (23.5°F)
-8.8°C (16.2°F)
499mb
-6.1°C (21.0°F)
Approximately -14°C (7°F)
489mb
-7.1°C (19.2°F)
-10.2°C (13.6°F)
439mb
-11.1°C (12.0°F)
-15.9°C (3.4°F)
429mb
-11.7°C (10.9°F)
Approximately -20°C (-4°F)
392mb
-17.1°C (1.2°F)
Approximately -24°C (-11°F)
383mb
-18.1°C (-0.6°F)
-20.4°C (-4.7°F)
370mb
-19.9°C (-3.8°F)
-22.8°C (-9.0°F)
354mb
-21.7°C (-7.1°F)
Approximately -30°C (-22°F)
313mb
-28.9°C (-20.0°F)
-29.6°C (-21.3°F)
303mb
-30.5°C (-22.9°F)
-33.7°C (-28.7°F)
294mb
-32.1°C (-25.8°F)
-34.7°C (-30.5°F)
284mb
-33.5°C (-28.3°F)
Approximately -48°C (-54°F)
273mb
-35.5°C (-31.9°F)
Approximately -50°C (-58°F)
223mb
-47.5°C (-53.5°F)
Approximately -54°C (-65°F)
201mb
-52.7°C (-62.9°F)
Approximately -61°C (-78°F)



Significant Wind Levels...
Level
Wind Direction
Wind Speed
1015mb (Surface)
110° (from the ESE)
17 knots (20 mph)
954mb
100° (from the E)
21 knots (24 mph)
911mb
110° (from the ESE)
13 knots (15 mph)
850mb
135° (from the SE)
15 knots (17 mph)
815mb
140° (from the SE)
13 knots (15 mph)
791mb
120° (from the ESE)
12 knots (14 mph)
735mb
135° (from the SE)
15 knots (17 mph)
700mb
120° (from the ESE)
13 knots (15 mph)
669mb
150° (from the SSE)
12 knots (14 mph)
593mb
115° (from the ESE)
17 knots (20 mph)
500mb
110° (from the ESE)
15 knots (17 mph)
472mb
95° (from the E)
12 knots (14 mph)
459mb
105° (from the ESE)
11 knots (13 mph)
403mb
60° (from the ENE)
10 knots (12 mph)
389mb
40° (from the NE)
15 knots (17 mph)
371mb
40° (from the NE)
12 knots (14 mph)
359mb
20° (from the NNE)
11 knots (13 mph)
339mb
30° (from the NNE)
13 knots (15 mph)
326mb
10° (from the N)
10 knots (12 mph)
306mb
305° (from the NW)
2 knots (2 mph)
277mb
350° (from the N)
12 knots (14 mph)
249mb
345° (from the NNW)
12 knots (14 mph)
236mb
10° (from the N)
13 knots (15 mph)
186mb
310° (from the NW)
16 knots (18 mph)
173mb
310° (from the NW)
14 knots (16 mph)
162mb
330° (from the NNW)
12 knots (14 mph)

The highest wind observed in the "Significant Wind Levels" section is noted in bold.

[Derek Ortt]

where are the HDOBS?

[KWT]

The key uncertainty in my mind is going to be exactly where it is in relation to Bermuda. To that end the models still seem pretty uncertain...

I have to admit I had my doubts about the ECM situation but its utterly nailed this in the end.

[srainhoutx]

Ya, that weakness/ little spin is def. droping down on him quickly

http://wxweb.meteostar.com/models/noaap ... UMBLOOP=10