Reconnaissance Data Archive 2018Śiva wrote: ↑Sun Oct 14, 2018 5:30 pmCan you give me the direct link? There are a whole bunch there and I'm not sure which tangled path you followed.Sean Hayden wrote: ↑Sun Oct 14, 2018 5:27 pmI linked to where I got the data:
National Hurricane Center Data: https://www.nhc.noaa.gov/recon.php
Too Late To Flee Mega-Day-After Tomorrow Storm
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
Re: Too Late To Flee Mega-Day-After Tomorrow Storm
Uh huh... I'm looking at that, there are a lot of them. Is this really so difficult to just give me the direct link?
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
From Appendix G HD/HA Data Line Format for HDOB MessagesŚiva wrote: ↑Sun Oct 14, 2018 5:29 pmI'm looking at the appendix you pointed me toward, but the data format of the above does not conform to that in the document.Sean Hayden wrote: ↑Sun Oct 14, 2018 4:59 pmThis data is taken from a hurricane hunter mission aircraft. It's pretty cool how this stuff works! I had to do some digging to find out how to interpret this data. Anyway, this is a random sample taken from around 1:45 Wednesday. The column we are interested in here is the 5th from the right, specifically the last three digits of that column. They give us the wind speed in knots. Just multiply that by 1.15 to get it in MPH. There are some crazy gusts in there. From the few minutes of research I did, this storm should be recorded as a record breaker.000
URNT15 KWBC 101353
NOAA2 1414A MICHAEL HDOB 33 20181010
134330 2911N 08605W 7523 01866 9294 +196 +161 242016 021 015 002 00
134400 2909N 08603W 7524 01865 9289 +203 +167 238044 055 044 003 00
134430 2908N 08601W 7524 01893 9319 +198 +165 232079 092 095 006 00
134500 2907N 08559W 7526 01948 9391 +182 +178 229121 135 122 016 00
134530 2906N 08557W 7484 02093 9492 +168 //// 224140 144 112 028 01
134600 2905N 08555W 7499 02136 9567 +168 //// 222132 135 106 018 01
134630 2903N 08554W 7515 02167 9620 +169 +165 219124 127 100 007 00
134700 2902N 08552W 7529 02188 9662 +169 +153 220119 123 091 012 00
134730 2901N 08550W 7527 02229 9707 +158 //// 218115 117 084 009 01
134800 2900N 08548W 7532 02244 9733 +163 +132 218112 113 081 006 00
134830 2859N 08547W 7529 02273 9769 +152 +136 219107 109 074 004 00
134900 2858N 08545W 7521 02302 9794 +150 +139 220102 103 071 005 00
134930 2857N 08543W 7520 02320 9811 +149 +138 218096 097 069 005 00
135000 2856N 08541W 7524 02329 9828 +147 +141 219092 094 067 004 00
135030 2855N 08540W 7525 02340 9835 +155 +140 217087 090 065 004 00
135100 2854N 08538W 7527 02348 9845 +155 +147 217083 083 066 005 00
135130 2852N 08536W 7503 02383 9856 +153 +149 218081 082 066 007 00
135200 2851N 08534W 7509 02385 9866 +147 //// 218090 094 063 026 01
135230 2850N 08532W 7525 02372 9875 +146 //// 216089 091 061 030 01
135300 2849N 08531W 7526 02381 9885 +146 //// 216086 087 063 029 05
If you want to try to dig through this stuff --pretty cool, but I've got a bio exam this week -- check out these links:
The hurricane hunters: http://www.hurricanehunters.com/mission.html
National Hurricane Center Data: https://www.nhc.noaa.gov/recon.php
To find out how to read the data above see chapter 5 and Appendix G of the National Hurricane Operations Plan here: https://www.ofcm.gov/publications/nhop/nhop2.htm
If you really dig it why not put it into a human readable table and download all their data! I'm sure someone has already I just couldn't be arsed to dig further.
EDIT: 5th column from the right guys.
hhmmss LLLLH NNNNNH PPPP GGGGG XXXX sTTT sddd wwwSSS MMM KKK ppp FF
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
There are indeed a shitton eh? I had to go back and dig it out myself. Here it is:
https://www.nhc.noaa.gov/archive/recon/ ... 101353.txt
Re: Too Late To Flee Mega-Day-After Tomorrow Storm
Thanks Sean! That was in the middle of the Gulf of Mexico, so that explains why it doesn't agree with the data from the weather stations around Panama City.
Re: Too Late To Flee Mega-Day-After Tomorrow Storm
oops, my bad. The 144kts gust was recorded ~120km south of Panama City
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
--right. I was trying to find when it made landfall to check but none of the news gives exact time. Did you find that?
Re: Too Late To Flee Mega-Day-After Tomorrow Storm
I just have the data from the weather stations. Here are a few of the IDs:
DW6748
APCF1
EW7533
DW6748
APCF1
EW7533
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
If you check the rest of the recon data you'll see it varies rapidly and sometimes quite dramatically. I'm not sure how far out the hurricane force winds extend beyond the site of measurement, but I'd guess that if it's kicking ass like that 80 miles offshore then whatever is in its path on land is going to get hit hard.
So I think it's interesting and cool if the data are that different, especially if the data being reported in the news is drastically different from devices in the storm. Has anyone else noticed it?
So I think it's interesting and cool if the data are that different, especially if the data being reported in the news is drastically different from devices in the storm. Has anyone else noticed it?
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
When NOAA gives data they say things like "highest sustained winds". How that's measured is anybody's guess. I'd imagine the wind speeds differ greatly at varying altitudes. When Irma passed to the east of us we were getting sustained winds of about 75 measured at the airport, which is a quarter mile from our house, and gusts up to 90 or 95. But even the sustained winds varied, you could see and hear it. "Sustained" is an average across some time interval, maybe the 10 seconds you mentioned. The media will, predictably, go with the worst case scenario (breathlessly). The Saffir-Simpson category scale is useful for planning purposes. Ride out a 1 or 2, think about leaving for a 3, and GTFO for a 4 or 5. It's designed not only on sustained wind speed, but also potential property damage. Here's the description of categories from Wiki:
Category Sustained Winds Types of Damage Due to Hurricane Winds
1 74-95 mph Very dangerous winds will produce some damage: Well-constructed frame homes could have damage to roof, shingles, vinyl siding and gutters. Large branches of trees will snap and shallowly rooted trees may be toppled. Extensive damage to power lines and poles likely will result in power outages that could last a few to several days.
2 96-110 mph Extremely dangerous winds will cause extensive damage: Well-constructed frame homes could sustain major roof and siding damage. Many shallowly rooted trees will be snapped or uprooted and block numerous roads. Near-total power loss is expected with outages that could last from several days to weeks.
3 (major) 111-129 mph Devastating damage will occur: Well-built framed homes may incur major damage or removal of roof decking and gable ends. Many trees will be snapped or uprooted, blocking numerous roads. Electricity and water will be unavailable for several days to weeks after the storm passes.
4 (major) 130-156 mph Catastrophic damage will occur: Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls. Most trees will be snapped or uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
5 (major) 157 mph or higher Catastrophic damage will occur: A high percentage of framed homes will be destroyed, with total roof failure and wall collapse. Fallen trees and power poles will isolate residential areas. Power outages will last for weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
Based on the damage descriptions, it was probably a 5 at Mexico Beach, probably a 4 in Panama City. From what I'm seeing on St. George and Dog it was a 2. Irma was a 1 for us.
Category Sustained Winds Types of Damage Due to Hurricane Winds
1 74-95 mph Very dangerous winds will produce some damage: Well-constructed frame homes could have damage to roof, shingles, vinyl siding and gutters. Large branches of trees will snap and shallowly rooted trees may be toppled. Extensive damage to power lines and poles likely will result in power outages that could last a few to several days.
2 96-110 mph Extremely dangerous winds will cause extensive damage: Well-constructed frame homes could sustain major roof and siding damage. Many shallowly rooted trees will be snapped or uprooted and block numerous roads. Near-total power loss is expected with outages that could last from several days to weeks.
3 (major) 111-129 mph Devastating damage will occur: Well-built framed homes may incur major damage or removal of roof decking and gable ends. Many trees will be snapped or uprooted, blocking numerous roads. Electricity and water will be unavailable for several days to weeks after the storm passes.
4 (major) 130-156 mph Catastrophic damage will occur: Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls. Most trees will be snapped or uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
5 (major) 157 mph or higher Catastrophic damage will occur: A high percentage of framed homes will be destroyed, with total roof failure and wall collapse. Fallen trees and power poles will isolate residential areas. Power outages will last for weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
Based on the damage descriptions, it was probably a 5 at Mexico Beach, probably a 4 in Panama City. From what I'm seeing on St. George and Dog it was a 2. Irma was a 1 for us.
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
You can read how the recon data is collected. I just read what was necessary to make sense of the data I looked at.
It's pretty cool. They drop a sensor and read all the way down. I'm pretty sure the readings I posted are from the surface. If you're really curious you can use the time stamps and find out what it was doing at landfall. I just took a guess based on news reports saying it made landfall early afternoon.
It was definitely a beast when it hit as the damage shows.
It's pretty cool. They drop a sensor and read all the way down. I'm pretty sure the readings I posted are from the surface. If you're really curious you can use the time stamps and find out what it was doing at landfall. I just took a guess based on news reports saying it made landfall early afternoon.
It was definitely a beast when it hit as the damage shows.
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Re: Too Late To Flee Mega-Day-After Tomorrow Storm
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