The Storm Prediction Center has indicated that there is a slight risk for severe thunderstorms today and tonight. The main threat will be damaging winds from the thunderstorms. - issued at 3:48 a.m.
We will see our first extended period of rainfall in months. - issued at 3:40 a.m.
- Storm Prediction Center
- Lucas County forecast
- Area Forecast Discussion issued by Cleveland National Weather Service
- Weather Terms
- Hazardous Weather Outlook
- Lucas County SKYWARN Frequencies: 147.27+ (pl 103.5) - Backup frequency is: 147.345
- Warnings & Advisories Map
- Satellite image of cloud cover
- Radar Images:
Clev NWS Discus 8/9 9:38am
Excerpts from the Area Forecast Discussion
area forecast discussion...updated
national weather service cleveland oh
936 am edt thu aug 9 2012
.near term /until 6 pm this evening/...
bumped up afternoon temps a degree or two. showers should continue
to diminish this morning and then redevelop this afternoon.
original discussion...
showers and thunderstorms continue to develop and move
northeast along the stationary front. i still have a trend in the
forecast of gradually increasing the probabilities for showers and
thunderstorms through the day.
there is a threat for strong to severe thunderstorms today as the
atmosphere destabilizes with day time heating. main threat will
likely be strong damaging winds. i included a mention of this
threat in the hazardous weather outlook but will hold off on
mentioning severe threat in the forecast at this time.
.short term /6 pm this evening through sunday night/...
low pressure moves northeast along the stationary front. there are
some model differences with the nam holding back a bit further west
with the low compared to the gfs. the end result is we will see our
first extended period of rainfall in months.
SPC Forecast 8/9 8:56am
Risk for severe weather.
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Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point.
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Probability of one inch diameter hail or larger within 25 miles of a point.
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Probability of a tornado within 25 miles of a point.
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Excerpts from the Storm Prediction Center Convective Outlook
day 1 convective outlook
nws storm prediction center norman ok
0756 am cdt thu aug 09 2012
valid 091300z - 101200z
...there is a slgt risk of svr tstms from ny/pa swwd across the oh
valley and mid-south into nrn la and nern tx...
...synopsis...
long wave trough will remain over the ern states as a strong upper
low entering nern mn digs ssewd across the upper great lakes today
before reaching srn lakes mi late tonight. water vapor imagery
indicates several embedded short wave troughs...with the primary one
moving esewd across the middle ms valley attm. this is expected to
move across the oh/tn valleys today and gradually weaken with time
before approaching the appalachians tonight. in the west...an upper
ridge will remain centered over the four-corners region while a
short wave trough off the nrn pacific coast moves into the pacific
nw.
...oh valley into pa/ny...
nocturnal convection is continuing from indiana into oh this morning
within a weak low level warm advection zone in advance of the middle
ms valley short wave trough. this activity is expected to spread
ewd/enewd today. visible imagery shows sufficient breaks in clouds
from ern oh into pa and ny which will allow diurnal heating and air
mass destabilization to occur...with mlcape reaching 1000-2000 j/kg
this afternoon. this suggests potential for storms to intensify
along the leading edge of the oh convection...with additional storms
developing farther east in parts of pa and ny in association with
terrain forcing and a gradually diminishing cin. 25-35 kt deep
layer shear will favor organized multicell and short linear segments
with potential for stronger storms to produce damaging wind gusts
and hail into the evening.
surface analysis and radar indicates a composite outflow boundary
from extreme srn il enewd along the oh river into srn oh. this
boundary may persist into the afternoon with the wrn portion
possibly lifting nwd over srn il and srn indiana. this effective
boundary may provide an additional focus for new storm development
as the leading edge of dynamic forcing for large scale ascent
associated with the aforementioned upper low interacts with the
boundary and cold front over il and indiana. increasing deep layer
vertical shear will promote organized storm structures including
short line segments and isolated supercells. this activity will
persist through the evening hours with a threat for damaging winds
and hail spreading enewd across parts of indiana and oh...and
possibly reaching wrn pa before weakening.