Recon Reports Dennis

[drezee]

000
URNT11 KWBC 051755
97779 17554 30110 81100 45500 12020 02671 /8024
RMK NOAA3 WX04A DENNIS OB 02 KWBC


11.0 N 81.1 W

20 kt SE Winds

Do you have a link for where you are getting those obs?

http://www.nhc.noaa.gov/text/MIAREPNT1.shtml?

[clfenwi]

(from http://www.hurricanehunters.com/recco.htm)


/jHHH...
/ is an indicator for this group
j is the code for the level being reported by HHH in this group. The code is as follows...

8..D-value in geopotential decameters (if negative, 500 is added to HHH)

What is the definition of D-value? Just wondering, as it has been given in the first two obs...

[clfenwi]

00
URNT11 KWBC 051830
97779 18304 30114 78400 45500 10013 02661 /8024
RMK NOAA3 WX04A DENNIS OB 03 KWBC

1830Z / 11.4 North 78.4 West / Flight level (4550 meter) winds 13 knots from 100.

[clfenwi]

000
URNT11 KWBC 051858
97779 18584 30119 76200 46300 11009 01580 /8024
RMK NOAA3 WX04A DENNIS OB 04 KWBC

1858Z / 11.9 North 75.2 West / Flight Level (4630 meters) winds 9 knots from 110 /

This is 516 (corrected) nm WSW of the center given in the 1 PM advisory.

[Downdraft]

Link for decoded recon and vortex data is:
http://weather.net-waves.com/td03.php

[Rainband]

000
URNT11 KWBC 051858
97779 18584 30119 76200 46300 11009 01580 /8024
RMK NOAA3 WX04A DENNIS OB 04 KWBC

1858Z / 11.9 North 75.2 West / Flight Level (4630 meters) winds 9 knots from 110 /

This is 568 nm WSW of the center given in the 1 PM advisory.

Mexico Bound

[x-y-no]

What is the definition of D-value? Just wondering, as it has been given in the first two obs...

Good question. Hope someone knows the answer.

[alicia-w]

D-Value=
The quantity D describing the altitude of a point on a constant-pressure surface by its departure from “standard” altitude: where Z is the actual altitude above mean sea level and Z p is the pressure altitude of the same point.

[x-y-no]

D-Value=
The quantity D describing the altitude of a point on a constant-pressure surface by its departure from “standard” altitude: where Z is the actual altitude above mean sea level and Z p is the pressure altitude of the same point.

Excellent, thank you!

So "/8024" means the pressure at flight level is 240 meters higher than "standard."

[OtherHD]

000
URNT11 KWBC 051858
97779 18584 30119 76200 46300 11009 01580 /8024
RMK NOAA3 WX04A DENNIS OB 04 KWBC

1858Z / 11.9 North 75.2 West / Flight Level (4630 meters) winds 9 knots from 110 /

This is 568 nm WSW of the center given in the 1 PM advisory.

Mexico Bound

what it means is that the plane isn't near the storm yet

[JTD]

000
URNT11 KWBC 051858
97779 18584 30119 76200 46300 11009 01580 /8024
RMK NOAA3 WX04A DENNIS OB 04 KWBC

1858Z / 11.9 North 75.2 West / Flight Level (4630 meters) winds 9 knots from 110 /

This is 568 nm WSW of the center given in the 1 PM advisory.

Mexico Bound

what it means is that the plane isn't near the storm yet

Let's not say that the center is 568 NM south of it's last known NHC position without being sure ever again.

Thanks.

[Roxy]

000
URNT11 KWBC 051858
97779 18584 30119 76200 46300 11009 01580 /8024
RMK NOAA3 WX04A DENNIS OB 04 KWBC

1858Z / 11.9 North 75.2 West / Flight Level (4630 meters) winds 9 knots from 110 /

This is 568 nm WSW of the center given in the 1 PM advisory.

Mexico Bound

what it means is that the plane isn't near the storm yet

Let's not say that the center is 568 NM south of it's last known NHC position without being sure ever again.

Thanks.

Thanks...LOL! I was SOOOO confused. I was looking at my map going, WTF?

[clfenwi]

Let's not say that the center is 568 NM south of it's last known NHC position without being sure ever again.

Thanks.

bah, 516 nautical miles from 2 PM advisory...
568 was from 11 AM advisory...

my apologies...better QC to follow...

(LATER, AFTER REREADING POST)

I DID NOT SAY THE CENTER WAS 568 NM FROM LAST KNOWN NHC POSITION.

That position was of the plane... there was nothing in my post that implied otherwise...

[clfenwi]

URNT11 KWBC 051928
97779 19284 30126 74000 51700 07022 52660 /4587
RMK NOAA3 WX04A DENNIS OB 05 KWBC

1928Z
Plane location 12.6 N 74.0 W.
Flight level 5170 m
flight level winds 22 knots from 070
500 millibar heght 5870 meters

[senorpepr]

Storm Name: DENNIS OB XX (04L)
Mission Number: WX
Flight ID: NOAA3
Observation Number:
Time: 2056Z
Latitude: 14.2°N
Longitude: 68.1°W
Location: 174 mi NE of Oranjestad, Aruba
Minimum height at NA
Est. Surface Winds Observed: NA
Distance and bearing from center to max surface wind: NA
Maximum flight level wind: NNE (17°) @ 44 mph
Distance and bearing from center to max flight level wind: 22 mi WSW (241°)
Sea level pressure: 1005 mb
Max flight level temperature outside the eye: 45°F at 1654 feet
Max flight level temperature inside the eye: 46°F at 1693 feet
Dewpoint temperature inside the eye: 48°F
Eye character: POORLY DEFINED
Eye shape: NA
Eye diameter: NA
Fix determined by: Penetration Radar Wind at 700 mb
Navigation / Met Accuracy: 1/ 7 NM
MAX FLT LVL WIND 39 KT W QUAD AT 05/2048Z

[loon]

Latitude: 14.2°N
Longitude: 68.1°W

Is this what they are calling the center? or are they still just floating around?

[Canelaw99]

If that's the center, it's right on lat. wise, but not as far west as they had it in their 5pm advisory.

[senorpepr]

Yes, that was the center fix.

[Normandy]

Looks stronger than 39 KT flight levels, any higher wind measurements?

[senorpepr]

Looks stronger than 39 KT flight levels, any higher wind measurements?

We'll see as recon heads to the other side of the storm.