Chilling and Growing Degree Hour Information for Various Locations Around the State

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October 1, 2022 through February 15, 2023

Location Total Std. chill hours Total Mod. chill hours Last Data (Days)
Auburn University Turf Unit (Auburn) 143 (740 last year) 0 (654 last year) 12/02/22 (63)
Black Belt REC (Marion Junction) 647 (926 last year) 494 (785 last year) 02/15/23 (138)
Brewton Ag Research Unit (Brewton) 617 (823 last year) 463 (700 last year) 02/15/23 (138)
Chilton County REC (Thorsby) 772 (982 last year) 584 (846 last year) 02/15/23 (138)
EV Smith Research Center HQ (Shorter) 721 (951 last year) 543 (789 last year) 02/15/23 (138)
Gulf Coast Station REC (Fairhope) 437 (553 last year) 340 (512 last year) 02/15/23 (138)
Sand Mountain REC (Crossville) 1117 (1273 last year) 810 (1030 last year) 02/15/23 (138)
Tennessee Valley REC (Belle Mina) 1069 (1250 last year) 758 (1018 last year) 02/15/23 (138)
Upper Coastal Plain Substation (Winfield) 1077 (1250 last year) 780 (1008 last year) 02/15/23 (138)
Wiregrass REC (Headland) 476 (640 last year) 363 (564 last year) 02/15/23 (138)

NOTES:

Chill totals for previous years do not include data past February 15.
Comparison data is for the same month and day last year.
The (Days) value after the date indicates the number of days used in calculations



GDH Values Descriptions

Range (GDH cumulations)Description
5000-6000Full Bud Swell/First Green
6000-8000Pre-Pink (Calyx green/red)
8000-9200Pink Bud
9200-1040050% Bloom


Auburn University Turf Unit (Auburn)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 Not met 0 Not met 0
550 Not met 0 Not met 0
650 Not met 0 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


Black Belt REC (Marion Junction)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 01/14/23 9508.8 02/06/23 4144.8
550 01/27/23 6351.6 Not met 0
650 Not met 0 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


Brewton Ag Research Unit (Brewton)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 01/15/23 11385.6 02/13/23 1294.8
550 02/04/23 4663.2 Not met 0
650 Not met 0 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


Chilton County REC (Thorsby)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 12/27/22 14512.8 01/26/23 5638.8
550 01/14/23 8314.8 02/11/23 1533.6
650 01/26/23 5638.8 Not met 0
750 02/12/23 1375.2 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


EV Smith Research Center HQ (Shorter)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 01/07/23 12148.8 01/28/23 6735.6
550 01/16/23 9765.6 Not met 0
650 02/04/23 4394.4 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


Gulf Coast Station REC (Fairhope)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 Not met 0 Not met 0
550 Not met 0 Not met 0
650 Not met 0 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0


Sand Mountain REC (Crossville)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 12/19/22 10272 01/14/23 5697.6
550 12/24/22 10170 01/23/23 3944.4
650 01/05/23 6825.6 02/01/23 2985.6
750 01/14/23 5697.6 02/07/23 2544
850 01/23/23 3944.4 Not met 0
950 02/01/23 2985.6 Not met 0
1050 02/06/23 2740.8 Not met 0


Tennessee Valley REC (Belle Mina)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 12/19/22 11217.6 01/20/23 4503.6
550 12/25/22 11174.4 01/27/23 4057.2
650 01/08/23 7236 02/03/23 3255.6
750 01/16/23 6051.6 02/13/23 1077.6
850 01/26/23 4057.2 Not met 0
950 02/03/23 3255.6 Not met 0
1050 02/12/23 1263.6 Not met 0


Upper Coastal Plain Substation (Winfield)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 12/20/22 11889.6 01/20/23 4629.6
550 12/25/22 11743.2 01/26/23 4119.6
650 01/09/23 7320 02/03/23 3254.4
750 01/20/23 4629.6 02/12/23 1276.8
850 01/27/23 4119.6 Not met 0
950 02/03/23 3254.4 Not met 0
1050 02/12/23 1276.8 Not met 0


Wiregrass REC (Headland)
Chill Requirement Date Chilling Met GDH Total Date Modified Chilling Met Chilling Hours Modified
450 02/12/23 1388.4 Not met 0
550 Not met 0 Not met 0
650 Not met 0 Not met 0
750 Not met 0 Not met 0
850 Not met 0 Not met 0
950 Not met 0 Not met 0
1050 Not met 0 Not met 0