| Background Information for this page | ||||||
| Return to radar list for Monmouth ME | ||||||
| Weather data for Monmouth ME. Forecast values begin August 3, 2010 | ||||||
|
Weather-based RELATIVE daily fireblight blossom infection risk values
below are according to criteria of the Cougarblight model developed in
Washington state by Dr. Timothy J. Smith.
ABSOLUTE risk also depends on cultivar and rootstock susceptibility, and on the number of flowers open. Infection risk may be overstated for first few days of bloom because fire blight bacteria may not have been distributed to open flowers. Cougarblight heat units are similar to degree hours base 60 F. NOTICE! - Fireblight infection can occur without rain if there is "heavy" dew. But "heavy" dew in relation to fireblight is not defined. As a rough guess, if there is no rain on a day, but leaf wetness is expected to exceed 3 hours for that day, then infection conditions are reported with "if dew" attached. Infection potential may be overstated on days when the "if dew" tag is attached. |
||||||
| Range of
potential open-blossom dates Gray box indicates dates when most trees will have lost open blossoms and susceptibility to blossom infection. Gray box dates included for late cultivars and late-blooming young trees. |
Fire blight risk categories by block history | |||||
| I = No FB in the area during last two seasons requires 500+ heat units for HIGH! rating, 800+ for EXTREME! II = FB present in the area, but not within 1 mile of your orchard last year requires 400+ heat units for HIGH! rating, 650+ for EXTREME! III = FB in this orchard block or neighboring orchard last year requires 300+ heat units for HIGH! rating, 500+ for EXTREME! IV = Active FB strikes or cankers present in this or neighboring block requires 200+ heat units for HIGH! rating, 350+ for EXTREME! |
||||||
| If fire blight blossom infection occurred on May 4, then blossom blight would be noticeable by May 27, and shoot blight by June 16. | ||||||
| Inches Rain & Leaf Wet Hours & Heat Units |
No FB in area for last two years I |
FB in area last year, but over 1 mile away II |
FB last year within 1 mile III |
Currently active FB IV |
||
| Sun, May 2 | 0.01'', 2 hrs., 110 HU | Low | Low | Low | Marginal | |
| Mon, May 3 | 0.'', 0 hrs., 310 HU | 0 | 0 | 0 | 0 | |
| Tue, May 4 | 0.19'', 13 hrs., 373 HU | Low | Marginal | HIGH! | EXTREME! | |
| Wed, May 5 | 0.'', 7 hrs., 433 HU | Marginal (if dew) |
HIGH! (if dew) |
HIGH! (if dew) |
EXTREME! (if dew) |
|
| Thu, May 6 | 0.18'', 9 hrs., 341 HU | Low | Low | HIGH! | HIGH! | |
| Fri, May 7 | 0.'', 0 hrs., 142 HU | 0 | 0 | 0 | 0 | |
| Sat, May 8 | 0.52'', 22 hrs., 79 HU | Low | Low | Low | Low | |
| Sun, May 9 | 0.'', 9 hrs., 19 HU | Low | Low | Low | Low | |
| Mon, May 10 | 0.'', 0 hrs., 1 HU | 0 | 0 | 0 | 0 | |
| Tue, May 11 | 0.'', 0 hrs., 0 HU | 0 | 0 | 0 | 0 | |
| Wed, May 12 | 0.'', 2 hrs., 0 HU | 0 | 0 | 0 | 0 | |
| Thu, May 13 | 0.'', 0 hrs., 10 HU | 0 | 0 | 0 | 0 | |
| Fri, May 14 | 0.'', 0 hrs., 10 HU | 0 | 0 | 0 | 0 | |
| Sat, May 15 | 0.02'', 11 hrs., 11 HU | Low | Low | Low | Low | |
| Sun, May 16 | 0.'', 0 hrs., 42 HU | 0 | 0 | 0 | 0 | |
| Mon, May 17 | 0.'', 0 hrs., 87 HU | 0 | 0 | 0 | 0 | |
| Tue, May 18 | 0.'', 3 hrs., 105 HU | Low | Low | Low | Marginal (if dew) |
|
| Wed, May 19 | 0.77'', 22 hrs., 104 HU | Low | Low | Low | Marginal | |
| Thu, May 20 | 0.'', 10 hrs., 256 HU | Low | Low | Marginal (if dew) |
HIGH! (if dew) |
|
| Fri, May 21 | 0.'', 0 hrs., 249 HU | 0 | 0 | 0 | 0 | |
| Sat, May 22 | 0.'', 0 hrs., 264 HU | 0 | 0 | 0 | 0 | |
| Sun, May 23 | 0.'', 10 hrs., 335 HU | Low | Low | HIGH! (if dew) |
HIGH! (if dew) |
|
| Mon, May 24 | 0.'', 11 hrs., 397 HU | Low | Marginal (if dew) |
HIGH! (if dew) |
EXTREME! (if dew) |
|
| Tue, May 25 | 0.'', 7 hrs., 708 HU | HIGH! (if dew) |
EXTREME! (if dew) |
EXTREME! (if dew) |
EXTREME! (if dew) |
|
| Wed, May 26 | 0.'', 0 hrs., 1036 HU | 0 | 0 | 0 | 0 | |
| Thu, May 27 | 0.'', 3 hrs., 1044 HU | EXTREME! (if dew) |
EXTREME! (if dew) |
EXTREME! (if dew) |
EXTREME! (if dew) |
|
| Fri, May 28 | 0.'', 0 hrs., 847 HU | 0 | 0 | 0 | 0 | |
| Sat, May 29 | 0.'', 8 hrs., 561 HU | HIGH! (if dew) |
HIGH! (if dew) |
EXTREME! (if dew) |
EXTREME! (if dew) |
|
| Sun, May 30 | 0.'', 7 hrs., 301 HU | Low | Low | HIGH! (if dew) |
HIGH! (if dew) |
|
| Mon, May 31 | 0.'', 0 hrs., 269 HU | 0 | 0 | 0 | 0 | |
| Tue, June 1 | 0.51'', 16 hrs., 239 HU | Low | Low | Marginal | HIGH! | |
| Wed, June 2 | 0.'', 15 hrs., 204 HU | Low | Low | Marginal (if dew) |
HIGH! (if dew) |
|
| Thu, June 3 | 0.35'', 24 hrs., 102 HU | Low | Low | Low | Marginal | |
| Fri, June 4 | 0.'', 12 hrs., 178 HU | Low | Low | Marginal (if dew) |
Marginal (if dew) |
|
| Sat, June 5 | 0.98'', 23 hrs., 238 HU | Low | Low | Marginal | HIGH! | |
| Sun, June 6 | 1.09'', 24 hrs., 200 HU | Low | Low | Marginal | Marginal | |
| Mon, June 7 | 0.'', 9 hrs., 245 HU | Low | Low | Marginal (if dew) |
HIGH! (if dew) |
|
| Tue, June 8 | 0.04'', 0 hrs., 134 HU | Low | Low | Low | Marginal | |
| Wed, June 9 | 0.'', 2 hrs., 107 HU | 0 | 0 | 0 | 0 | |
| Thu, June 10 | 0.4'', 22 hrs., 107 HU | Low | Low | Low | Marginal | |
| Fri, June 11 | 0.'', 11 hrs., 98 HU | Low | Low | Low | Low | |
| Sat, June 12 | 0.01'', 14 hrs., 132 HU | Low | Low | Low | Marginal | |