The Work Week will Begin with Unsettled Weather from the Southern Plains to the Great Lakes

Unsettled weather is forecast to continue through the first half of the work week from the Southern Plains to the Great Lakes as a frontal system moves through. Isolated to scattered severe thunderstorms and flash flooding will be possible each day. Meanwhile, scattered showers and thunderstorms are expected across the Southwest and California, with isolated flash flooding possible. Read More >

Summer Briefing

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Local Storm Reports

Severe Weather Outlooks

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Information on SPC's Severe Thunderstorm Risk Categories

River Flooding

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Precipitation Forecast

1-Day Rainfall

2-Day Rainfall

3-Day Rainfall

Additional Weather Elements

(mouse over day or period to see map below)

Max Temperature	Day 1		Day 2		Day 3		Day 4		Day 5
Min Temperature	Day 1		Day 2		Day 3		Day 4		Day 5
Heat Index	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7
Max Wind Gust	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9
Chance of Precip	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9
Recent Lightning	Yesterday	2 Days Ago	3 Days Ago	4 Days Ago	5 Days Ago	6 Days Ago	7 Days Ago	8 Days Ago

Forecast Timelines

Single Site Timelines

Detailed Point Forecast

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Climate Outlooks

8-14 Day Temp Outlook

8-14 Day Precip Outlook

Drought Monitor

Summer Weather Definitions

Tornado or Severe Thunderstorm WATCH:

Conditions are favorable for the development of tornadoes, large hail, and/or damaging winds.

Tornado WARNING:

A tornado has been detected on radar or sighted by trained spotters.

Severe Thunderstorm WARNING:

A severe thunderstorm has been detected on radar or reported by trained spotters. A severe thunderstorm is a storm that produces hail 1 inch or larger and/or winds 58 mph or greater

Severe Thunderstorm Outlook Terms:

Marginal Risk:
Isolated severe thunderstorms are possible.
Slight Risk:
Scattered or short-lived severe thunderstorms are possible.
Enhanced Risk:
Numerous or persistent severe thunderstorms are possible.
Moderate Risk:
Widespread, long-lived, and intense severe thunderstorms are likely.
High Risk:
Widespread, long-lived, and particularly intense severe thunderstorms are expected.

Flood WATCH:

Conditions are favorable for flooding.

Flash Flood WARNING:

Life-threatening flooding is detected on radar, indicated by stream gauges, or reported by storm spotters. A flash flood is a flood that occurs very quickly; it is caused by heavy rainfall over a short period of time or from a dam break.

Flood WARNING:

Rivers overflowing their banks or water covering a normally dry area. Floods are usually caused by heavy rain over a long period of time, rapidly melting snow, or ice jams.

Extreme Heat WARNING:

Heat index 105 degrees or higher, with a minimum heat index of 75 degrees for 48 hours or longer; or heat index of 100 degrees or higher for four consecutive days.