8:03pm EDT Vortex: Closed 25 nautical mile wide eye
Posted by
Chris in Tampa on 9/3/2017, 8:41 pm

Pressure was 961mb. Sonde last measured wind 16 meters above the surface, where it was 9 knots.
Product: NOAA Vortex Message (URNT12 KWBC) Transmitted: 4th day of the month at 0:24Z Agency: National Oceanic and Atmospheric Administration (NOAA) Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF) Storm Number & Year: 11 in 2017 Storm Name: Irma (flight in the North Atlantic basin) Mission Number: 1 Observation Number: 21 A. Time of Center Fix: 3rd day of the month at 23:58:27Z B. Center Fix Coordinates: 17°18'N 50°21'W (17.3N 50.35W) B. Center Fix Location: 682 statute miles (1,097 km) to the ENE (65°) from Bridgetown, Barbados. C. Minimum Height at Standard Level: 2,773m (9,098ft) at 700mb D. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 91kts (~ 104.7mph) E. Location of the Estimated Maximum Surface Wind Inbound: 11 nautical miles (13 statute miles) to the ESE (105°) of center fix F. Maximum Flight Level Wind Inbound: From 189° at 90kts (From the S at ~ 103.6mph) G. Location of Maximum Flight Level Wind Inbound: 12 nautical miles (14 statute miles) to the ESE (103°) of center fix H. Minimum Sea Level Pressure: 961mb (28.38 inHg) I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 9°C (48°F) at a pressure alt. of 3,057m (10,030ft) J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 18°C (64°F) at a pressure alt. of 3,055m (10,023ft) K. Dewpoint Temp (collected at same location as temp inside eye): 11°C (52°F) K. Sea Surface Temp (collected at same location as temp inside eye): Not Available L. Eye Character: Closed M. Eye Shape & Diameter: Circular with a diameter of 25 nautical miles (29 statute miles) N. Fix Determined By: Penetration, Radar, Wind and Pressure N. Fix Level: 700mb O. Navigational Fix Accuracy: 0.02 nautical miles O. Meteorological Accuracy: 1 nautical mile
Remarks Section - Remarks That Were Decoded... Maximum Flight Level Wind: 99kts (~ 113.9mph) which was observed 16 nautical miles (18 statute miles) to the NW (318°) from the flight level center at 22:41:38Z Maximum Flight Level Wind Outbound: 93kts (~ 107.0mph) which was observed 14 nautical miles (16 statute miles) to the W (270°) from the flight level center at 0:01:59Z Maximum Flight Level Temp: 18°C (64°F) which was observed 6 nautical miles to the W (271°) from the flight level center
Remarks Section - Additional Remarks... CNTR DROPSONDE SFC WIND 169 / 9 KTS AT 16 M ABV SFC |
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In this thread:
5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards -
Chris in Tampa,
9/3/2017, 5:05 pm- Re: 5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards - stevemc12, 9/4/2017, 3:07 am
- Re: 5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards - stevemc12, 9/4/2017, 2:51 am
- 0z GFS moves CAT 5 hurricane into Florida - Big Scott 76, 9/4/2017, 12:53 am
- A bit of a Model Shift tonight - beachman80, 9/3/2017, 10:27 pm
- Radar loop of NOAA hurricane hunters' first mission - Chris in Tampa, 9/3/2017, 9:47 pm
- GFS ensemble models - Big Scott 76, 9/3/2017, 8:49 pm
- Re: 5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards - Big Scott 76, 9/3/2017, 8:43 pm
- 8:03pm EDT Vortex: Closed 25 nautical mile wide eye - Chris in Tampa, 9/3/2017, 8:41 pm
- Weather Prediction Center Medium Range Forecast - Chris in Tampa, 9/3/2017, 8:30 pm
- 8pm AST Sunday: "Irma expected to be near the northern Leeward Islands by late Tuesday" - Chris in Tampa, 9/3/2017, 8:17 pm
- First Vortex Message: 961mb; 11 knots of surface wind - Chris in Tampa, 9/3/2017, 5:51 pm
- Radar image from center of Irma at 5:16:49pm EDT Sunday - Chris in Tampa, 9/3/2017, 5:28 pm
- Re: 5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards - Shalista, 9/3/2017, 5:09 pm
- Re: 5pm AST Sun: 115mph; W (260 degrees) at 14mph; Hurricane watches issued for parts of Leewards - AquaRN, 9/3/2017, 5:08 pm
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