Funnel Clouds this Evening

A few funnel clouds had formed from showers along Highway 20 this evening. There was no threat since the conditions were not favorable for the funnels to reach the ground.

Here is part of a statement from the NWS on the funnels:

THESE FUNNELS ARE TYPICALLY SHORT LIVED AND RARELY 
TOUCH DOWN. THE ATMOSPHERIC CONDITIONS THESE 
FUNNELS ARE DEVELOPING IN DO NOT SUPPORT 
STRONG…DAMAGING TORNADOES.

Courtesy: Alexandria Darrow
0.5 mile east of Onieda
July 8 Funnel 1

Courtesy: April Hinton
Manchester
July 8 Funnel 2

 

Courtesy: Sarah Ann
near Edgewood
July 8 Funnel 3

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Posted under Photo

This post was written by Schnack on July 8, 2013

Weather Hot Shot on Mon. July 8

Submit your weather Hot Shot by clicking here.
One photo is shown on the 5 pm newscast and one on the 10 pm newscast.

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Posted under Hot Shots, Photo

This post was written by Schnack on July 8, 2013

Uncomfortable Humidity with Possible Severe Storms


UPDATED at 4:30 PM

Tonight: Partly cloudy with a 40% chance of showers/storms. Low: 71-74. Wind: W 5-10 mph.

Tuesday: Partly cloudy with a 60% chance of showers/storms. High: 87-92. Heat Index: near 100. Wind: SW 10-15 mph.

Tuesday Night: Showers/storms end in the evening then clearing overnight. Low: 67-71. Wind: W 5-15 mph.

Wednesday: Mostly sunny. High: low 80s.

Thursday: Mostly sunny. High: low 80s.

Friday: Mostly sunny. High: mid 80s.

Saturday: Partly cloudy. High: low 80s.

Sunday: Partly cloudy with a 20% chance of showers/storms. High: mid 80s.

Monday: Partly cloudy with a 20% chance of showers/storms. High: mid 80s.

 

The humidity level is going to remain high through Tuesday night. Dewpoints are forecast to be in the upper 60s and low 70s during this time. Dry air is forecast to move into the area Wednesday with dewpoints in the upper 50s and low 60s…much more comfortable.

There is a stationary front across Iowa this afternoon and along it isolated showers/storms are possible this evening. A severe storm is possible if they develop this evening. Here is the area of concern.

July 8 mcd1348
The stationary front will not move much at all tonight. There is a potential for a cluster of storms to develop over South Dakota later tonight. If they do develop the forecast path takes them south and east across Iowa late tonight and come to an end early Tuesday morning. Here is the surface map this afternoon

 July 8 Curren Sfc Map

The Storm Prediction Center outlines a slight risk of severe weather for tonight and Tuesday across Iowa.

July 8 Svr Wx Outlook

The chance of severe weather Tuesday afternoon and evening is highly dependent upon what the storms (if any) tonight do. If they develop tonight the question is: how fast does the rain end and how fast does the cloud cover clear Tuesday morning. The longer the rain/clouds linger the less of a chance of severe weather in the afternoon. If no storms develop tonight or if they do and end around sunrise with lots of sunshine during the day…the chances of severe weather increases during the afternoon as the cold front approaches from the west.

Here is the rain forecast for Monday evening to Wednesday evening.

July 8 QPF

Once the front and storms push away from the area Tuesday night, cooler and less humid air will move into the Midwest with a large area of high pressure. Dry weather is forecast to continue through Saturday. Here is the forecast position of the high Friday morning.

July 8 Fri AM Sfc Map
There is a slight chance of showers/storms Sunday and Monday with the passage of a cold front.

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Posted under Forecast Discussion

This post was written by Schnack on July 8, 2013

24 Hour Rain Totals

rain
24 Hour Rain Totals from 7 AM Sunday to 7 AM Monday

Location County Rain
Waterloo Black Hawk 0.00
Dubuque Dubuque 0.83
Cedar Rapids Linn 0.01
Iowa City Johnson 0.00
Anamosa 3SSW, IA Jones 0.02
CASCADE, IA Dubuque 0.82
Cedar Rapids 2.0 ENE Linn 0.03
Cedar Rapids 3.4 NW Linn 0.02
Central City 6.7 W Linn 0.06
CHARLES CITY, IA Floyd 0.01
COGGON, IA Linn 1.37
COLWELL, IA Floyd 0.06
CRESCO 1NE, IA Howard 0.13
Decorah 7.9 ENE Winneshiek 0.04
Dubuque #3, IA Dubuque 1.08
Dubuque 3.2 N Dubuque 2.04
Dubuque L&D 11, IA Dubuque 1.70
EDGEWOOD, IA Clayton 1.02
ELKADER 6SSW, IA Clayton 0.97
FAYETTE, IA Fayette 0.09
GUTTENBERG L & D 10, IA Clayton 0.48
IONIA 2W, IA Chickasaw 0.04
IOWA CITY, IA Johnson 0.07
LOWDEN, IA Cedar 0.14
MANCHESTER NO. 2, IA Delaware 0.08
MAQUOKETA 4 W, IA Jackson 0.25
Marion 1.2 NE Linn T
Monona WWTP, IA Clayton 1.92
Monticello, IA Jones 0.15
NASHUA 2SW, IA Floyd 0.01
NEW HAMPTON, IA Chickasaw 0.05
OSAGE , IA Mitchell 0.11
Peosta 0.7 ESE Dubuque 1.49
Quasqueton 1.8 S Buchanan T
ST ANSGAR, IA Mitchell 0.20
STRAWBERRY POINT, IA Clayton 1.31
VOLGA 1NE, IA Clayton 0.85
Waucoma 0.2 N Fayette 0.19
Waucoma 3.2 S Fayette 0.12
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Posted under Precipitation Totals

This post was written by Schnack on July 8, 2013