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Areal Flood Advisory 0042
Issued by the Riverton Forecast Office

Action Issued Starts Expiration
New 2026-08-13 11:57:48 2026-08-13 11:57:00 2026-08-13 14:00:00
Expired 2026-08-13 13:58:50 2026-08-13 14:00:00


Action: New
Issued At: 2026-08-13 11:57:48

755 
WGUS85 KRIW 131657
FLSRIW

Flood Advisory
National Weather Service Riverton WY
1057 AM MDT Thu Aug 13 2026

WYC025-131900-
/O.NEW.KRIW.FA.Y.0042.260813T1657Z-260813T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Natrona WY-
1057 AM MDT Thu Aug 13 2026

...FLOOD ADVISORY IN EFFECT UNTIL 1 PM MDT THIS AFTERNOON...

* WHAT...Urban area and small stream flooding caused by excessive
  rainfall is expected.

* WHERE...East Central Natrona County in central Wyoming...

* WHEN...Until 100 PM MDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
  - At 1057 AM MDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms. This  will cause urban and small
    stream flooding. Between 0.5 and 1.5 inches of rain have fallen.
  - Additional rainfall amounts up to 0.5 inches are expected over
    the area. This additional rain will result in minor flooding.
  - Some locations that will experience flooding include...
    Casper, Mills, Evansville, Paradise Valley, Fort Caspar
    Campground, Central Wyoming Fairgrounds and Casper Events Center.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4285 10644 4281 10642 4278 10637 4283 10625
      4287 10626 4289 10633 4287 10639


$$

Myers


Action: Expired
Issued At: 2026-08-13 13:58:50

436 
WGUS85 KRIW 131858
FLSRIW

Flood Advisory
National Weather Service Riverton WY
1258 PM MDT Thu Aug 13 2026

WYC025-131908-
/O.EXP.KRIW.FA.Y.0042.000000T0000Z-260813T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Natrona WY-
1258 PM MDT Thu Aug 13 2026

...FLOOD ADVISORY WILL EXPIRE AT 1 PM MDT THIS AFTERNOON...

The Flood Advisory across the Casper area will expire at 1 PM MDT
this afternoon.

The heavy rain has ended. Urban area and small stream flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.

&&

LAT...LON 4285 10644 4281 10642 4278 10637 4283 10625
      4287 10626 4289 10633 4287 10639


$$

Myers



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