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Going to be "that guy"


phlwx

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This has been a topic at our office for a while and I finally solved my curiosity today. It happened on March 7th. I'm not sure what "it" was, but you can't tell me the below image is "within tolerance". It's a comparison of the NJWeatherNet site in Berkley Twp vs KNEL and shows that something clearly changed.

 

The KNEL Difference

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Interesting theory, though I think it was the storm on March 6th with winds over 50mph and continued breezy conditions which had a hand in something going wrong. They had not been 4 degrees different in at least 85 days prior and then split to about 4 degrees different throughout all of the 7th and after 10p on the 7th just split forever, shown in the prior chart (http://www.americanwx.com/bb/index.php/gallery/image/98-the-knel-difference/).

 

                                                                     KNEL                                                Berkeley                                             

                          Wx                         Temp    Wind         Dir        Gust                        Temp    Wind         Dir          Gust

3/6/2013 02:00                                                                                                              38           12           E-           12

3/6/2013 03:00                                  40           16           80           26                           40           18           E            25

3/6/2013 04:00                                  40           22           80           29                           40           20           ENE        32

3/6/2013 05:00                                  40           23           80           31                           40           19           ENE        31

3/6/2013 06:00                                  40           20           80           33                           40           24           ENE        37

3/6/2013 07:00                                  40           22           80           34                           40           23           ENE        43

3/6/2013 08:00                                  41           30           70           37                           40           29           ENE        39

3/6/2013 09:00                                  40           24           70           38                           41           32           NE          43

3/6/2013 10:00  -RA                          41           28           60           44                           41           35           ENE        48

3/6/2013 11:00  -RA                          40           31           70           40                           40           24           ENE        47

3/6/2013 12:00  -RA                          44           24           60           40                           40           30           ENE        50

3/6/2013 13:00  RA                           43           30           60           47                           40           30           NE          48

3/6/2013 14:00  RA                           42           32           50           54                           38           27           NE          48

3/6/2013 15:00  -RA                          37           21           60           43                           38           35           NE          58

3/6/2013 16:00                                                                                                             39           31           ENE        50

3/6/2013 17:00  -RA                          39           16           40           30                           38           20           NNE       49

3/6/2013 18:00  -RA                          39           17           30           31                           38           20           NNE       40

3/6/2013 19:00  -RA                          39           21           50           37                           37           12           NNE       42

3/6/2013 20:00  -RA                          37           18           30           31                           37           11           NE          45

3/6/2013 21:00  -RA                          36           13           20           23                           35           24           NNE       33

3/6/2013 22:00  UP                           36           10           30           22                           35           14           NNE        31

3/6/2013 23:00  -SN                          37           9             10           26                           35           19           N            30

3/7/2013 00:00  -SN                          37           9             20           17                           33           16           N            26

3/7/2013 01:00  SN                           36           6             VR                                          33           20           NNW      29

3/7/2013 02:00  -SN                          36           7             10           17                           33           13           N            23

3/7/2013 03:00                                  37           9             10           20                           34           12           NNE       23

3/7/2013 04:00                                  39           7             VR          21                           35           14           NNE       25

3/7/2013 05:00                                  39           11           10           21                           35           13           N            21

3/7/2013 06:00                                  37           6             VR                                          34           11           NNW      28

3/7/2013 07:00                                  39           9             10           17                           35           10           NNE       26

3/7/2013 08:00                                  39           10           360         17                           36           18           NNE       28

3/7/2013 09:00                                  40           10           360         20                           36           15           NNE       27

3/7/2013 10:00                                                                                                              40           22           NNE       28

3/7/2013 11:00                                                                                                              38           17           N            27

3/7/2013 12:00                                  45           13           330         18                           39           10           NNW      27

3/7/2013 13:00                                  45           8             350         21                           40           12           NNW      22

3/7/2013 14:00                                  45           9             330         21                           41           9              N          20

3/7/2013 15:00                                  45           9             340                                        41           6              N          20

3/7/2013 16:00                                  43           8             10                                          39           6              NNW    21

3/7/2013 17:00  -RA                          41           8             340         21                           38           12           NNW     25

3/7/2013 18:00                                                                                                              37           9              NNW    19

3/7/2013 19:00                                  40           5              VR                                        36           13           NNW     16

3/7/2013 20:00                                  38           7              VR          20                          35           16           NNW      22

3/7/2013 21:00  -SN                          37           6              VR                                        34           7              NNW     19

3/7/2013 22:00                                  40           7              320                                       34           7              NW       14

3/7/2013 23:00  -RA                          41           5              VR                                        34           4              N          15

 

[boy I wish I knew how to insert a table  :) ]

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  • 2 weeks later...

Walt Drag posted this in our AFD yesterday. 

KNEL: FYI...NOTICED THE MAX TEMPERATURE HAD A SUBSTANTIAL DAILY
WARM DEPARTURE CHANGE OF NEARLY 10 DEGREES WARMER THAN SURROUNDING
NJ REPORTING STATIONS ON PARTLY SUNNY OR SUNNY DAYS BEGINNING
AROUND MARCH 9TH. THAT DATA HAS NOT POSTED IN OUR RWR AND RTP
SINCE EARLY APRIL. THE NEAR 100 DEGREE READINGS OF THE PAST TWO
DAYS AT KNEL NEEDS TO BE IGNORED FOR NORMALLY SHELTERED OFFICIAL
READINGS.

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Several people at my office still working on this issue, but yeah no time table when this may be resolved.

 

If it weren't located at Lakehurst NAS (and under tighter security), I'd suggest that you, Tony, and one other meteorologist of your choosing do this:

 

post-105-0-67764800-1373532231_thumb.jpg

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Here is the latest, as stated before we're well aware of the issue and are trying multiple avenues to have the issue resolved. Thanks for heads up in the form about the national attention KNEL has received. 

 

EQUIPMENT...
KNEL TEMP DATA IS INACCURATE AND HAS BEEN SINCE ABOUT MARCH 9TH.
IT IS RUNNING ABOUT 8 TO 10 DEGREES TOO WARM AND THE PROBLEM IS
PARTICULARLY NOTICEABLE DURING DAYTIME HOURS. USE OF THIS
INFORMATION BY THE NWS WAS SUSPENDED IN EARLY APRIL HERE AT MOUNT
HOLLY WHERE WE NO LONGER POSTED THE INFORMATION IN OUR HOURLY
WEATHER ROUND UP AND THE TWICE DAILY REGIONAL TEMPERATURE AND
PRECIPITATION SUMMARY SENT AT 815 AM AND PM.

WE ARE DEEPLY CONCERNED WITH RECENT MEDIA REPORTS CITING THIS
ERRONEOUS DATA, AND IN SOME CASES ATTRIBUTING IT TO THE NWS. KNEL IS
A DOD SITE AND HAS BEEN NOTIFIED MULTIPLE TIMES THAT THEIR DATA IS
IN ERROR. NO CORRECTIVE ACTION HAS BEEN TAKEN THAT WE ARE AWARE
OF.

PLEASE BE EXTREMELY CAUTIOUS WITH THIS DATA SET. THE NWS IN MOUNT
HOLLY DOES NOT USE IT. THANK YOU.

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It's pretty bad on a number of levels when the NWS has to tell people in AFD's not to use a particular site's data...and it's arguably worse that the DOD is being as pokey about addressing the problem as they are.

 

One would think that just be comparing data between BLM or WRI and NEL you'd get a sense something was waaaaaaaaaaaaaaaaaaaayyy off.

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Why not just take it offline till its fixed?

NEL is not a NWS site.  Its on what was once known as the Lakehurst Naval Air Station, now Joint Base McGuire-Dix-Lakehurst, under the responsibility of the Department of Defense.

 

Remember, the primary function of most airport weather stations is to support aviation.

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  • 2 weeks later...
  • 3 months later...

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