About Maximum/Minimum Temperature Guidance Text Products

MDL has developed MOS forecast equations based on output from NCEP's GFS model for maximum and minimum temperature and snowfall amount guidance for approximately 7400 cooperative observer sites in the United States. These developments were done using NCDC's TD-3200 Cooperative Summary of the Day reports.

The short-range text messages contains maximum and minimum temperatures for 1 to 4 days from the 0000, 0600, 1200, and 1800 UTC GFS model runs. The extended-range text message contains maximum and minimum temperature forecasts for 1 to 8 days from the 0000 UTC GFS model run. In early 2005, we began producing an extended-range text product from the 1200 UTC GFS model run as well. We currently have no plans to produce a COOP temperature guidance text message based on the NAM model. The stations in the message are listed alphabetically by state, using their NWS site identifier. For max/min temperature, guidance is available for approximately 5600 sites.

Starting with the 1200 UTC cycle on May 25, 2004, the forecasts will be available on the NWS ftp server, which has 24x7 operational support. The products will continue to be available on our webpages, which are only supported during regular business hours. The locations for both are given below. We will begin distributing the messages to AWIPS via the SBN on February 8, 2005. The NWS announcement of this change is TIN 04-54. The WMO and AWIPS headers will be:

WMO HEADER      AWIPS HEADER
FOUS10 KWNO     MCGUSA         SHORT-RANGE GFS GUIDANCE
FEUS10 KWNO     MCXUSA         EXTENDED-RANGE GFS GUIDANCE

Messages can be found on NWS FTP Server (TGFTP). On this server, the files are stored in directories called RD.YYYYMMDD, where YYYYMMDD is the year, month and day. Within the RD.YYYYMMDD directory, the files will be named cy.XX.txt, where XX is the cycle. Data will be available for two days.

 

The Coop Min/Max Temperature Message (Short Range)

Sample Message (Short Range 00Z or 06Z cycle)
1
                                                                                
 GFS-BASED MOS COOP MAX/MIN GUIDANCE  12/17/03  0000 UTC                        
          WED 17| THU 18| FRI 19| SAT 20                                        
 ABNA1        50| 26  52| 32  47| 26                                            
 ALCA1        47| 24  50| 29  49| 27                                            
 ALDA1        54| 29  59| 32  53| 25                                            
 ALUA1        45| 27  47| 29  41| 26                                            
 ALXA1        45| 29  45| 27  45| 28                                            
 ATHA1        53| 33  59| 33  53| 32                                            
 ATMA1        51| 28  51| 29  47| 30                                            
   (continues on) 

 

Sample Message (Short Range 12Z or 18Z cycle)
1
                                                                                
 GFS-BASED MOS COOP MAX/MIN GUIDANCE  12/17/03  1200 UTC                        
          THU 18| FRI 19| SAT 20                                                
 ABNA1    27  52| 32  43| 25  49                                                
 ALCA1    25  50| 32  44| 24  47                                                
 ALDA1    28  60| 30  52| 28  54                                                
 ALUA1    29  45| 27  38| 23  43                                                
 ALXA1    29  46| 28  40| 21  40                                                
 ATHA1    34  61| 31  51| 29  53                                                
 ATMA1    26  53| 28  44| 24  48         
   (continues on)

 

The Coop Min/Max Temperature Message (Extended Range)

Sample Message (Extended Range)
1
                                                                                
                     
 GFSX-BASED MOS COOP MAX/MIN GUIDANCE 12/18/03  0000 UTC                        
                     
          THU 18| FRI 19| SAT 20| SUN 21| MON 22| TUE 23| WED 24| THU 25| 
 ABNA1        51| 32  47| 26  50| 24  52| 28  58| 35  54| 35  54| 31  53|       
 ALCA1        55| 29  47| 25  49| 25  52| 30  57| 34  54| 34  51| 30  52|       
 ALDA1        61| 32  54| 27  53| 25  58| 30  63| 36  62| 35  60| 29  58|       
 ALUA1        47| 30  44| 24  45| 25  50| 31  55| 35  51| 36  50| 32  50|       
 ALXA1        47| 30  42| 23  45| 27  50| 33  54| 35  49| 29  49| 30  48|       
 ATHA1        60| 35  55| 30  54| 31  58| 35  62| 39  60| 36  58| 32  57|       
 ATMA1        52| 29  48| 25  49| 28  52| 33  57| 36  56| 34  54| 34  52|     
   (continues on)