Green Bay received 8.31 inches of rain in May, 5.56 inches above
the average May rainfall for the last 30 years. We had at least
a trace of precipitation on 23 of the 31 days this month. Many local
streams are flooded and many farm fields are also flooded. The temperature
was about 2.8 °F below average for the month.
Our three commonest species of clover are in flower in Allouez
(but not yet on UWGB): Trifolium hybridum (Alsike clover),
T. repens (white clover), T. pratense (red
Clintonia borealis (blue-bead lily) and Calla
palustris (wild calla) in flower, Forest County.
Geranium maculatum (wild geranium) at about peak
Prunus serotina (black cherry) in flower, UWGB
||Baptisia bracteata ( ) in flower, UWGB.
||The sun returns, high temperature in low
60's. Aralia nudicaulis (wild sarsaparilla) and Ranunculus
recurvatus (hooked buttercup) in flower, UWGB.
||Rain returns after one and a half sunny days.
Green Bay has received 4.32 inches more than the average amount for
this portion of May.
At last, a full sunny day. Tragopogon dubia (yellow goat's-beard)
in flower, Allouez.
Argentina anserina (silverweed, formerly Potentilla
anserina) in flower, City of Green Bay.
Erigeron philadelphicus (common fleabane), Lupinus
perennis (lupine) and Euonymus alata (winged
burning-bush) in flower, UWGB.
Spittlebugs on sweet clover, UWGB.
||The rain finally cleared out and the last
half of the day was sunny and mild. First day of flowering for Hesperis
matronalis (dame's rocket), Viburnum lentago (nannyberry),
Polygonatum pubescens (Solomon's-seal), Hydrophyllum
virginianum (Virginia waterleaf) and Cornus stolonifera
(red-osier dogwood) on UWGB campus.
||Cool and rainy weather persists. Green Bay
has had at least a trace of rain for each of the last 7 days (it
rained on 17 of the first 23 days in May ), and a total of
6.49 inches of rain in May. That is about 4.52 inches higher than
average for this point in May.
||There have been flood warnings at
several locations in Wisconsin over the last couple of days, due to
persistent rain. Yesterday's high temperature was 56 F. Cool and rainy
temperatures have dramatically slowed the development of the local
||I was out of town for a couple of days, but
there has been very little development of the local phenology due
primarily to cool, cloudy and rainy days. Cornus stolonifera
(red-osier dogwood) is now in flower in Brown County.
Actaea rubra (red baneberry) and Galium aparine
(cleavers) in flower UWGB.
Black Swallowtail butterfly observed on UWGB.
There will be a delay of a few days before I next update these
Cold air moved in behind the rain. Green Bay reached a low temperature
of 37 F this morning. Wausau reported 32 F and many other areas
in northeastern Wisconsin reported freezing temperatures
early this morning.
Comandra umbellata (bastard-toadflax) in flower,
Prunus virginiana (choke cherry) in flower, Allouez.
Syringa vulgaris (lilac) beginning to flower, City
Green Bay received a total of 1.94 inches of rain on May
Rhinelander reported a low temperature of 27 F!
||Aesculus glabra (Ohio buckeye)
and Syringa vulgaris (lilac) in flower, both cultivated individuals,
UWGB. A few early plants of Crataegus mollis (hawthorn
or thornapple) have begun to flower in Brown County.
Malus pumila (apple, an escaped plant) in flower,
UWGB. Several cultivated individuals also began flowering today.
A few Poulus tremuloides (quaking aspen) began dispersing
seeds today, Barkhausen Waterfowl Preserve, Town of Suamico, Brown
||The Prunus nigra (Canada wild plum)
plant that began flower on May 3 is done flowering today. There is
a rapid development of leaves on many species of trees and shrubs.
Medicago lupulina (black medick) in flower, City
Uvularia grandiflora (large-flowered bellwort) in
flower, Brown County, Town of Green Bay.
||Ribes americana (American black
currant), Smilacina stellata (starry false solomon's-seal),
Prunus pensylvanica (pin cherry), Convallaria majalis
(lily-of-the-valley), Zanthoxylum americanum (prickly
ash) in flower, UWGB.
Amelanchier spicata (juneberry), Malus sp
(flowering crab--cultivated), Sambucus pubens (red
elderberry), Ribes missouriense (Missouri gooseberry),
Prunus americana (wild plum) in flower, UWGB.
Observed incredible number of migrating songbirds incidental to
other fieldwork on Plum Island including: Yellow-rumped Warbler
(conservatively ~several hundred), Palm Warbler (~10-15),
Northern Parula (~10-15), Black-throated Green Warbler
(~30-50), Cape May Warbler, Blackburnian Warbler,
Nashville Warbler, Scarlet Tanager, Red-headed Woodpecker,
Swamp Sparrow (<5), Lincoln's Sparrow (2), White-throated
Sparrow (<10), Rose-breasted Grosbeak (2). 48 species
observed in total, all from northern 1/3 of island (approx. 100
Plum Island, Door County (Jake Ivan).
(= S. interior, sandbar willow) in flower (anthesis),
Our first ruby-throated hummingbird at the feeder this morning,
and house wren singing in the yard. There seems to be a new
batch of white-throated sparrows this morning; slate-colored
juncos have apparently moved on, as I have not seen one for
several days, Town of Cooperstown, Manitowoc County
Amelanchier sanguinea (juneberry) in flower, UWGB.
I saw a large snapping turtle crossing the road, UWGB.
Here's a phenology item I'd rather not have experienced. After
many years in the outdoors in northeastern Wisconsin I collected
my first deer tick
today -- or more precisely, it collected me. This is the tick well
known for its ability to transmit Lyme Disease. On the plus side,
I did get photos of it. Fortunately, the "wood ticks"
that are so common in Wisconsin DO NOT transmit Lime Disease.
Viola pubescens (yellow violet) in flower, UWGB.
(quaking aspen) and Acer
negundo (box elder) leaves have grown large enough
to be conspicuously green in forests, UWGB.
The low temperature was 27° F in Green Bay this morning.
I had to scrape the frost from my windshield.
(Canadian wild plum) and Arisaema triphyllum (jack-in-the-pulpit)
in flower, UWGB.
The low temperature was 31° F in Green Bay this morning.
(ironwood), (Ranunculus abortivus) small-flowered
pennsylvanica (green ash), Celtis
occidentalis (hackberry, cultivated individual) in
Fragaria virginiana (wild strawberry) in flower,
City of Green Bay and Town of New Denmark, Brown County.
Good numbers of Palm Warblers and Black-throated Green
Warblers feeding around streams and spring ponds, Town of Polar,
Langlade County (Steve Janke).