April Rain Totals

Apr 30 Rain Totals

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Posted under Precipitation Totals

This post was written by Schnack on April 30, 2013

Weather Hot Shot on Tue. April 30

St. Thomas U.S. Virgin Islands

St. Thomas U.S. Virgin Islands

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 April 30, 2013

Cold, Wet and Windy Days Ahead


UPDATED at 4:45 PM

Tonight: Partly cloudy with a 40% chance of showers/storms. Low: 50-63. Wind: S 5-15 mph.

Wednesday: Mostly cloudy and windy with a 50% chance of showers. High: 50-75. Wind: N 15-25 mph.

Wednesday Night: Cloudy and windy with an 80% chance of showers. Low: 34-42. Wind: N 15-25 mph.

Thursday: Cloudy and windy (N15-25 mph) with an 80% chance of showers. High: near 40.

Friday: Cloudy with a 70% chance of showers. High: low 40s.

Saturday: Cloudy with a 70% chance of showers. High: low 50s.

Sunday: Cloudy with a 40% chance of showers. High: upper 50s.

Monday: Mostly cloudy. High: low 60s.

Tuesday: Partly cloudy. High: upper 60s.

It has been a warm day across eastern Iowa with temperatures in the 80s and some locations close to 90. Here are the 4 pm temperatures.

Blog Graphic 1

There is a cold front oriented NW to SE across Iowa this afternoon. Along the front there is a chance of showers and storms to develop this evening. A few of the storm could be severe with the main threat from the storms being large hail. Here is the SPC outlook for tonight.

Apr 30 Svr Wx

The cold front will not move very much tonight as the upper level wind is parallel to the surface front. Here is the surface front on the right and upper level wind on the left.

Apr 30 Front Upper Level Flow

Eventually the front will drift east Wednesday afternoon but, before it does parts of eastern Iowa will be warm on the east side of it. Highs will be in the 70s east of the front and 50s west of the front. There will be a better chance of rain behind the cold front in the colder air during the afternoon. The colder air and rain will spread east Wednesday night across all of eastern Iowa.

Thursday and Friday are still looking wet, cold and windy. Don’t be surprised to see a snowflake or two mixed in with the rain Thursday. We are tracking the potential for minor accumulation in the northwestern half Iowa Thursday. The map below shows the chances of 1” of snow or more for Wednesday evening to Thursday evening. Notice the chances are high across northwest Iowa.  The snow potential has been there for a few days now the only difference has been the exact position/orientation of the band of snow.

Apr 30 Snow

An upper level low will cut off and keep the rain in the forecast through the weekend. The best chance of rain will be Thursday through Saturday. Sunday the showers will be more scattered as the cut off low will finally move away. At that point early next week the temperatures will warm to the 60s as dry weather returns. Here is the rain forecast from Tuesday evening to Sunday evening.

Apr 30 QPF

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Posted under Forecast Discussion

This post was written by Schnack on April 30, 2013

24 Hour Rain Totals

rain

7 AM Monday to 7 AM Tuesday

Location County Rain
Waterloo Black Hawk 1.27
Dubuque Dubuque 0.02
Cedar Rapids Linn 0.00
Iowa City Johnson 0.00
Ainsworth 7.4 N Washington T
BELLE PLAINE, IA Benton 0.04
CALMAR, IA Winneshiek 0.06
CASCADE, IA Dubuque 0.02
Cedar Falls 1.4 SSE Black Hawk 0.58
Cedar Rapids 3.4 NW Linn 0.02
Central City 6.7 W Linn 0.06
CHARLES CITY, IA Floyd 0.14
CLERMONT, IA Fayette 0.53
COGGON, IA Linn 0.06
COLWELL, IA Floyd 0.02
Decorah 7.9 ENE Winneshiek 0.30
Dubuque #3, IA Dubuque 0.01
ELKADER 6SSW, IA Clayton 0.74
FAYETTE, IA Fayette 0.41
GRUNDY CENTER, IA Grundy 0.37
GUTTENBERG L & D 10, IA Clayton 0.33
HAMPTON, IA Franklin 0.03
IONIA 2W, IA Chickasaw 0.09
IOWA FALLS, IA Hardin 0.96
KESLEY 3 NNE, IA Butler 0.20
LANSING 4SE, IA Allamakee 0.61
Latimer 1.9 NE Franklin 0.08
MANCHESTER NO. 2, IA Delaware 0.62
Marion 1.2 NE Linn 0.02
NASHUA 2SW, IA Floyd 0.06
New Hampton 0.4 SW Chickasaw 0.20
Oelwein 0.8 WNW Fayette 0.80
Peosta 0.7 ESE Dubuque 0.01
Quasqueton 1.8 S Buchanan 0.80
Solon 0.3 ESE Johnson 0.06
STANLEY 4 W, IA Buchanan 0.91
TOLEDO 3 N, IA Tama T
TRIPOLI, IA Bremer 0.62
VOLGA 1NE, IA Clayton 0.70
WASHINGTON, IA Washington T
Waterloo 1.8 SSE Black Hawk 0.41
Waterloo 3.0 NNW Black Hawk 1.18
WAUCOMA , IA Fayette 0.09
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Posted under Precipitation Totals

This post was written by Schnack on April 30, 2013

April 30

TodayinWeatherHistoryFrom NWS
1994
: A late season snow storm affected eastern and southeastern Iowa dropping a quick 6.0 inches of snow at Dubuque which is the highest total on record so late in the season at that location. Other snowfall accumulations included 4.0 inches at Marion and 3.0 inches at Columbus Junction.

1936: Several tornadoes touched down across Iowa. One produced F4 damage in Estherville with at least 50 buildings destroyed and several people injured. Another F4 tornado moved from northwest of Everly to Lake Okoboji, killing 2 people and injuring 15 before dissipating as a waterspout over the lake.

1909: Rain fell across nearly all of Iowa then changed to snow across about the northern half of the state, with many stations reporting light accumulations including 1.0 inches at Algona and Mason City and 1.5 inches at Le Mars and New Hampton. Flurries continued through the day on May 1st and some locations reported significant blowing of snow as winds increased. Behind the storm unseasonably cold air filtered into the region for the first several days of May, with temperatures falling to as low as 20 F at Sheldon on the 1st and 18 F at Inwood on the 2nd and Washta on the 3rd. At Grand Meadow in Cherokee County the last of the snow drifts did not melt until May 5th.

This Day in National/World Weather History …
 30 April 1054 → The earliest tornado reported in Europe occurred on this day. It was in Rosdalla, Ireland.
 30 April 1852 → A significant tornado outbreak spread across Illinois, Indiana, and Kentucky. One tornado touched down near Paducah, KY, crossed into Illinois, and then crossed back into Kentucky, ending near Carrsville. Another tornado struck just south of New Harmony, IN and was said to have felled trees at a rate of 7,000 per minute.
 30 April 1888 → During a hailstorm in Moradabad, India baseball-sized hailstones killed over 230 people and more than 1600 animals.
 30 April 1924 → A large tornado outbreak struck a five-state region from Alabama to Virginia. One tornado family was on the ground for 105 miles and caused up to F4 damage from Aiken County to Darlington County in south-central South Carolina. Though no large towns were hit, 53 lives were still taken from rural communities by that tornado family.
 30 April 1989 → This day ended the first April in Oklahoma City’s history during which no thunderstorms occurred.
 30 April 2011 → There were 753 tornadoes in the U.S. in April 2011, the most ever recorded in a month (beating the old record by 211).
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Posted under Weather History

This post was written by Schnack on April 30, 2013