Chilling and Growing Degree Hour Information for Various Locations Around the State
Choose an ending year: Current 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005
October 1, 2022 through February 15, 2023
| Location | Total Standard chill hours |
TSC Last Year (same date) |
Total Modified chill hours (starts 11/25) |
TMC Last Year (same date) |
Last Data (Days) |
|---|---|---|---|---|---|
| Auburn University Turf Unit (Auburn) | 143 | 740 | 0 | 654 | 12/02/22 (63) |
| Black Belt REC (Marion Junction) | 647 | 926 | 494 | 785 | 02/15/23 (138) |
| Brewton Ag Research Unit (Brewton) | 617 | 823 | 463 | 700 | 02/15/23 (138) |
| Chilton County REC (Thorsby) | 772 | 982 | 584 | 846 | 02/15/23 (138) |
| EV Smith Research Center HQ (Shorter) | 721 | 951 | 543 | 789 | 02/15/23 (138) |
| Gulf Coast Station REC (Fairhope) | 437 | 553 | 340 | 512 | 02/15/23 (138) |
| Sand Mountain REC (Crossville) | 1117 | 1273 | 810 | 1030 | 02/15/23 (138) |
| Tennessee Valley REC (Belle Mina) | 1069 | 1250 | 758 | 1018 | 02/15/23 (138) |
| Upper Coastal Plain Substation (Winfield) | 1077 | 1250 | 780 | 1008 | 02/15/23 (138) |
| Wiregrass REC (Headland) | 476 | 640 | 363 | 564 | 02/15/23 (138) |
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 |
|---|---|
| 5000-6000 | Full Bud Swell/First Green |
| 6000-8000 | Pre-Pink (Calyx green/red) |
| 8000-9200 | Pink Bud |
| 9200-10400 | 50% 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 |