OSUmetstud Posted September 25, 2021 Share Posted September 25, 2021 50 minutes ago, Windspeed said: 58 minutes ago, yotaman said: What are the white dots in and around the eye? Lightning CGs. It's just flashes. The GLM is an optical instrument. Doesn't know what type of lightning. 1 1 Link to comment Share on other sites More sharing options...
OSUmetstud Posted September 25, 2021 Share Posted September 25, 2021 https://www.nhc.noaa.gov/text/URNT15-NOAA.shtml Can always go old school at the look at the HDOB file. It looks likes there two NOAA planes on the way. Link to comment Share on other sites More sharing options...
Windspeed Posted September 25, 2021 Share Posted September 25, 2021 It's just flashes. The GLM is an optical instrument. Doesn't know what type of lightning. I'm not even sure why I typed CGs ( i.e cloud-to-ground). I wasn't even thinking CGs when I made the post. But, yes, just GLM remote sensing data. Link to comment Share on other sites More sharing options...
OSUmetstud Posted September 25, 2021 Share Posted September 25, 2021 1 minute ago, Windspeed said: 7 minutes ago, OSUmetstud said: It's just flashes. The GLM is an optical instrument. Doesn't know what type of lightning. I'm not even sure why I typed CGs ( i.e cloud-to-ground). I wasn't even thinking CGs when I made the post. But, yes, just GLM remote sensing data. Lol yeah. All good. We do some lightning forecast for an energy client in Ontario so I know a little about the differences. Yeah the CG stuff I believe is detected by the land based network. The GLM is better at night because of this. Less interference from the sun. Link to comment Share on other sites More sharing options...
jpeters3 Posted September 25, 2021 Share Posted September 25, 2021 FWIW, ADT is now up to 6.1 (Raw to 6.4), which supports ~115-125 kts. So I'd guess 120 kt, 140 mph for current intensity. 2 Link to comment Share on other sites More sharing options...
Joe4alb Posted September 25, 2021 Share Posted September 25, 2021 Tropical tidbits is back up fyi 1 Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 1 hour ago, Windspeed said: Sam has most likely attained Category 4 intensity. Good time for recon to be en route. I suspect that is what they'll find. Absolutely spectacular. Glad recon is heading out there. Link to comment Share on other sites More sharing options...
cptcatz Posted September 25, 2021 Share Posted September 25, 2021 5pm: 140 mph, 943 mb It'll be interesting to see how good the NHC is at estimating wind and pressure based on satellite data as recon will give us the real numbers within an hour. 1 Link to comment Share on other sites More sharing options...
STxVortex Posted September 25, 2021 Share Posted September 25, 2021 NOAA2 recon is only about 120-150nm from Sam's eye now, that must make for an interesting and scary ride, there is no land for a very long distance. Looking at Sam's position and projected track I would hope that there are no yotties leaving the islands for European destinations attm; Sam will be traversing the common sea routes. Sam is bad news even for the largest of ships, let alone the 30-100 foot boats used for the transatlantic crossings. Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 Link to comment Share on other sites More sharing options...
SnowenOutThere Posted September 25, 2021 Share Posted September 25, 2021 Had to edit it down but this thing is amazing would not be surprised with a high end cat 4 from the satellite view. Link to comment Share on other sites More sharing options...
SnowenOutThere Posted September 25, 2021 Share Posted September 25, 2021 Just now, WxWatcher007 said: You just beat me to it Link to comment Share on other sites More sharing options...
STxVortex Posted September 25, 2021 Share Posted September 25, 2021 NOAA9 recon is already in Hurricane Sam. Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 2 minutes ago, STxVortex said: NOAA9 recon is already in Hurricane Sam. That's the flight to sample the environment, while NOAA2 will sample the center. Not sure how many passes they will get given the distance from their takeoff location. Link to comment Share on other sites More sharing options...
bluewave Posted September 25, 2021 Share Posted September 25, 2021 Tough to keep up with all the new RI records in recent years. 2 Link to comment Share on other sites More sharing options...
OSUmetstud Posted September 25, 2021 Share Posted September 25, 2021 4 minutes ago, WxWatcher007 said: That's the flight to sample the environment, while NOAA2 will sample the center. Not sure how many passes they will get given the distance from their takeoff location. Thanks. I was wondering why they didn't drop in and do a center pass. 1 Link to comment Share on other sites More sharing options...
STxVortex Posted September 25, 2021 Share Posted September 25, 2021 14 minutes ago, WxWatcher007 said: That's the flight to sample the environment, while NOAA2 will sample the center. Not sure how many passes they will get given the distance from their takeoff location. NOAA9 had been haulin' ass at ~515kts at FL40+, just slowed down to 354kt and went up ~3Kft in alt. NOAA2 is just entering Sam's western periphery, much lower and slower. 1 Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 Looks like a west to east pass from recon. Peak FL wind of 106kts and SFMR of 111kts. Extrapolated pressure of 942.1 at about 9,000ft. Might be just shy of the center though. Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 East side has the goods. 942.2 extrapolated with a peak FL wind of 127kts and peak SFMR of 133kts. Hell of a compact wind field. 2 Link to comment Share on other sites More sharing options...
Amped Posted September 25, 2021 Share Posted September 25, 2021 2 minutes ago, WxWatcher007 said: East side has the goods. 942.2 extrapolated with a peak FL wind of 127kts and peak SFMR of 133kts. Hell of a compact wind field. Hurricane Charlie basically. Link to comment Share on other sites More sharing options...
David Reimer Posted September 25, 2021 Share Posted September 25, 2021 Insane pressure gradient with Sam. Goes from 942 millibars to 1000 millibars in 24 miles. 2 Link to comment Share on other sites More sharing options...
jpeters3 Posted September 25, 2021 Share Posted September 25, 2021 1 minute ago, Amped said: Hurricane Charlie basically. My thoughts exactly. Probably 942/130 kt. I'm guessing based on the satellite presentation that the intensity peak occurred a few hours before the recon arrival. 1 Link to comment Share on other sites More sharing options...
Amped Posted September 25, 2021 Share Posted September 25, 2021 Also I don't see any sign of an ERC in the wind or pressure data. Just one sharp wind max on both sides. Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 Western eyewall dropsonde. Link to comment Share on other sites More sharing options...
Scorpion Posted September 25, 2021 Share Posted September 25, 2021 Hella good pressure estimate before recon get in. 1 Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 First VDM Product: NOAA Vortex Message (URNT12 KWBC)Transmitted: 25th day of the month at 22:34ZAgency: National Oceanic and Atmospheric Administration (NOAA)Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)Storm Name: SamStorm Number & Year: 18 in 2021 (flight in the North Atlantic basin)Mission: Second flight of a sequence of non-tasked research missions into this systemObservation Number: 08 ( See all messages of this type for this mission. )A. Time of Center Fix: 25th day of the month at 22:07:46ZB. Center Fix Coordinates: 13.29N 48.58WB. Center Fix Location: 742 statute miles (1,194 km) to the E (89°) from Bridgetown, Barbados.C. Minimum Height at Standard Level: 2,627m (8,619ft) at 700mbD. Minimum Sea Level Pressure: 945mb (27.91 inHg)E. Dropsonde Surface Wind at Center: From 120° at 9kts (From the ESE at 10mph)F. Eye Character: ClosedG. Eye Shape & Diameter: Circular with a diameter of 9 nautical milesH. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 111kts (127.7mph)I. Location & Time of the Estimated Maximum Surface Wind Inbound: 4 nautical miles to the W (273°) of center fix at 22:06:44ZJ. Maximum Flight Level Wind Inbound: From 358° at 106kts (From the N at 122.0mph)K. Location & Time of the Maximum Flight Level Wind Inbound: 4 nautical miles to the W (273°) of center fix at 22:06:49ZL. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 133kts (153.1mph)M. Location & Time of the Estimated Maximum Surface Wind Outbound: 7 nautical miles to the E (95°) of center fix at 22:09:26ZN. Maximum Flight Level Wind Outbound: From 177° at 127kts (From the S at 146.1mph)O. Location & Time of the Maximum Flight Level Wind Outbound: 9 nautical miles to the E (94°) of center fix at 22:09:53ZP. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 10°C (50°F) at a pressure alt. of 3,055m (10,023ft)Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 27°C (81°F) at a pressure alt. of 3,050m (10,007ft)R. Dewpoint Temp (collected at same location as temp inside eye): 4°C (39°F)R. Sea Surface Temp (collected at same location as temp inside eye): Not AvailableS. Fix Determined By: Penetration, Radar, Wind, Pressure and TemperatureS. Fix Level: 700mbT. Navigational Fix Accuracy: 0.01 nautical milesT. Meteorological Accuracy: 1 nautical mileRemarks Section: Maximum Flight Level Wind: 127kts (~ 146.1mph) which was observed 9 nautical miles to the E (94°) from the flight level center at 22:09:53Z Link to comment Share on other sites More sharing options...
STxVortex Posted September 25, 2021 Share Posted September 25, 2021 Looks like NOAA9 is going to make a high level pass right over the top now. NOAA9 is on the western periphery of Sam and just changing course, now heading ENE at 14Kgpm [ ~200mb, ~FL46]. Link to comment Share on other sites More sharing options...
WxWatcher007 Posted September 25, 2021 Share Posted September 25, 2021 Recon doing NE to SW pass right now. Finding 138, 139kt FL winds and a 134, 136kt SFMR. Link to comment Share on other sites More sharing options...
BYG Jacob Posted September 25, 2021 Share Posted September 25, 2021 Hopefully we get the sonde soon. The pressure probably just dropped quite a bit Link to comment Share on other sites More sharing options...
cptcatz Posted September 25, 2021 Share Posted September 25, 2021 Impressive 151 knot winds 447 meters up Link to comment Share on other sites More sharing options...
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