National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Alva, Alva Regional Airport (KAVK)

Lat: 36.77°NLon: 98.67°WElev: 1473ft.

Fair

77°F

25°C

Humidity 74%
Wind Speed SW 18 G 24 mph
Barometer 29.54 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 6:15 am CDT
Extended Forecast for

6 Miles S Manchester OK

Heat Advisory June 17, 01:00pm until June 17, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny and hot, with a high near 104. South southwest wind 11 to 20 mph, with gusts as high as 30 mph.

    High: 104 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 73. North wind 8 to 11 mph becoming east in the evening.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind 14 to 17 mph, with gusts as high as 26 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East northeast wind 5 to 10 mph becoming light east in the evening. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 89. Light east wind becoming east southeast 6 to 11 mph in the morning.

    High: 89 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 93.

    High: 93 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 99.

    High: 99 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 104. South southwest wind 11 to 20 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 73. North wind 8 to 11 mph becoming east in the evening.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind 14 to 17 mph, with gusts as high as 26 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East northeast wind 5 to 10 mph becoming light east in the evening. Chance of precipitation is 20%.
Juneteenth
Partly sunny, with a high near 89. Light east wind becoming east southeast 6 to 11 mph in the morning.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 93.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 99.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S Manchester OK
 36.92°N 98.06°W
Last Update:
1:27 am CDT Jun 17, 2026
Forecast Valid:
6am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation