First Vortex Message: 961mb; 11 knots of surface wind
Posted by
Chris in Tampa on 9/3/2017, 5:51 pm
NHC has estimated pressure at 969 mb. Looks to be 960mb.
URNT12 KWBC 032144 VORTEX DATA MESSAGE AL112017 A. 03/21:26:12Z B. 17 deg 23 min N 049 deg 52 min W C. 700 mb 2764 m D. 79 kt E. 253 deg 11 nm F. 332 deg 87 kt G. 253 deg 11 nm H. 961 mb I. 11 C / 3044 m J. 18 C / 3001 m K. 12 C / NA L. OPEN W M. C30 N. 12345 / 7 O. 0.02 / 1 nm P. NOAA2 0111A IRMA OB 06 MAX OUTBOUND FL WIND AND MAX FL WIND 96 KT 033 / 17 NM 21:30:11Z CNTR DROPSONDE SFC WIND 185 / 11 KTS
Product: NOAA Vortex Message (URNT12 KWBC) Transmitted: 3rd day of the month at 21:44Z 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: 06 A. Time of Center Fix: 3rd day of the month at 21:26:12Z B. Center Fix Coordinates: 17°23'N 49°52'W (17.3833N 49.8667W) B. Center Fix Location: 713 statute miles (1,148 km) to the ENE (66°) from Bridgetown, Barbados. C. Minimum Height at Standard Level: 2,764m (9,068ft) at 700mb D. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 79kts (~ 90.9mph) E. Location of the Estimated Maximum Surface Wind Inbound: 11 nautical miles (13 statute miles) to the WSW (253°) of center fix F. Maximum Flight Level Wind Inbound: From 332° at 87kts (From the NNW at ~ 100.1mph) G. Location of Maximum Flight Level Wind Inbound: 11 nautical miles (13 statute miles) to the WSW (253°) of center fix H. Minimum Sea Level Pressure: 961mb (28.38 inHg) I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 11°C (52°F) at a pressure alt. of 3,044m (9,987ft) J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 18°C (64°F) at a pressure alt. of 3,001m (9,846ft) K. Dewpoint Temp (collected at same location as temp inside eye): 12°C (54°F) K. Sea Surface Temp (collected at same location as temp inside eye): Not Available L. Eye Character: Open in the west, W M. Eye Shape & Diameter: Circular with a diameter of 30 nautical miles (35 statute miles) N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature N. Fix Level: 700mb O. Navigational Fix Accuracy: 0.02 nautical miles O. Meteorological Accuracy: 1 nautical mile
Remarks Section: Maximum Flight Level Outbound and Flight Level Wind: 96kts (~ 110.5mph) which was observed 17 nautical miles (20 statute miles) to the NNE (33°) from the flight level center at 21:30:11Z Dropsonde Surface Wind at Center: From 185° at 11kts (From the S at 13mph)
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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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