Weather Model times

Model Run Times

GFS (American Long-Range Global Model)
0z: 10:25pm-11:50pm
6z: 4:25am-5:50am
12z: 10:25am-11:50am
18z: 4:25pm-5:50pm

GFS Ensembles
0z: 11:45pm-12:35am
6z: 5:45am-6:35am
12z: 11:45am-12:35pm
18z: 5:45pm-6:35pm

NAM 12-km (American High-Resolution Medium Range Model)
0z: 8:35pm
6z: 2:35am
12z: 8:35am
18z: 2:35pm

NAM 4-km (Downscaled NAM)
0z: 8:45pm
6z: 2:45am
12z: 8:45am
18z: 2:45pm

HRRR 3-km (High-Resolution Local Model)
Runs every hour, at the top of the hour (00-23z)

CMC (Canadian Global Model)
0z: 11:00pm-12:05am
12z : 11:00am-12:05pm

RGEM 10-km (Canadian Regional Model)
0z: 11:05pm-12:10am
6z: 2:50am-3:330m
12z: 11:05am-12:10pm
18z:

CMC Ensembles
0z: 12:30am-1:30am
12z : 12:30pm-1:30pm
UKMET (English Global Model)
0z: 11:45am
12z: 11:45pm

ECMWF (European High-Resolution Model)
0z: 1:40am-2:00am
12z: 1:40pm-2:00pm
ECMWF Ensembles
0z: 2:00am-3:00am
12z: 2:00pm-3:00pm

NOGAPS (American Navy Global Model)
00z = 11:30 am
12z = 11:30 pm

DGEX (Soon to be discontinued)
06z = 4:50 AM
18z = 4:50 PM

JMA (Japanese Global Model)
00z = Between 1:00 & 3:00 am
12z = Between 1:00 & 3:00 am

Make sure you adjust this on November 1st when the clocks are set back one hour.

amugs wrote:Model Run Times

SREF:  9:20, 3:20 (AM/PM)
NAM: 10:00, 4:00  (AM/PM)
RGEM: 11:20, 5:00 (AM/PM)
GFS: 11:30; 5:30 (AM/PM)
UKMET:  11:40 (AM/PM)
GGEM (CMC):  12:00 (AM/PM)
GEFS (Ensembles): 1:00, 7:00 (AM/PM)
ECMWF (Euro/ECM):  1:45 (AM/PM)
ECM ensembles:  4:00 (AM/PM)

updated

Model times for your convenience:

GFS
0z: 10:30pm
6z: 4:30am
12z: 10:30am
18z: 4:30pm

NAM
0z: 8:35pm
6z: 2:35am
12z: 8:35am
18z: 2:35pm

CMC
0z: 12:00am
12z : 12:00pm

UKMET
0z: 12:30am
12z: 12:30pm

ECMWF
0z: 1:30am
12z: 1:30pm

NOGAPS
00z = 2:00 AM
12z = 2:00 PM

DGEX
00z = 5:15 AM
12z = 5:15 PM

JMA
00z = Between 1:00 & 3:00 AM
12z = Between 1:00 & 3:00 PM

Ok, now maybe I am overthinking this, but when we sprung ahead, do we have to adjust for the actual east coast time? Before, if the model showed snow at 18z we would subtract 5 hours to get east coast time. I assume it is now 4 hours? You would think I should know this by now!

Yes, model runs are an hour later due to Daylight Savings Time.

Math23x7 wrote:Yes, model runs are an hour later due to Daylight Savings Time.

I know they are an hour later, but the time on each frame for the weather conditions, we used to take off 5 hours to get Eastern time. Is it still 5 hours or 4?

It is now 4 hours. So 12:00 UTC = 8:00 AM EDT