Skip to main content
Day.News — Local News. Real Community.
RIVERTON DAY NEWS
Local News. Real Community.
weather
1 min read

Special Weather Statement issued September 18 at 3:31PM MDT by NWS Riverton WY

At 331 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms near Waltman, which is 45 miles northwest of Casper, moving northeast at 30 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow aro...

Staff Writer
09/18/2026 · Riverton edition

**Special Weather Statement issued September 18 at 3:31PM MDT by NWS Riverton WY**

At 331 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms near Waltman, which is 45 miles northwest of Casper, moving northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.

This storm will remain over mainly rural areas of northwestern Natrona County, including the following locations... Natrona and Arminto.

**What You Should Do:**

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways.

**Alert Details:**

- **Severity:** Moderate

- **Urgency:** Expected

- **Issued by:** NWS Riverton WY

- **Effective:** Sep 18, 2026 3:31 PM UTC

- **Expires:** Sep 18, 2026 4:15 PM UTC

*This alert was automatically distributed from the National Weather Service via the IPAWS All-Hazards Information Feed.*

Related Topics

Editorial Transparency
Source not recorded

Article Ratings

Factual
0.0
Likeable
0.0
Bias
0.0
Objective
0.0

How do you feel about this story?

Discussion (0)

Join the Conversation

Join the conversation

Sign in to share your thoughts, reply to readers, and like comments.

Sign in to comment
Sort by:
0 comments

No comments yet. Be the first to comment!

Trending Now

Trending stories will appear here.

More from Riverton

No other local stories are available right now.

Events & Things to Do

Read section →

Upcoming events will appear here.

Keep Reading

Related Stories

More weather stories from Riverton

weather

Red Flag Warning Expires for Sweetwater, Natrona Counties

The Red Flag Warning for Sweetwater and Natrona Counties has expired as of 6:00 PM MDT today, October 5, 2026, due to decreasing winds, according to the National Weather Service in Riverton.

Read Story →
weather

Red Flag Warning Issued for Sweetwater, Natrona, Fremont Counties

A Red Flag Warning has been issued for Sweetwater, Natrona, and Fremont Counties from 5:28 AM to 6:00 PM MDT today, October 5th, due to critical fire weather conditions, according to the NWS.

Read Story →
weather

Red Flag Warning Issued for Sweetwater, Natrona, Fremont Counties

A Red Flag Warning is in effect from today at noon until Monday at 6 PM MDT for Sweetwater, Natrona, and Fremont Counties, due to strong winds, low humidity, and warm temperatures increasing fire risk.

Read Story →
weather

Special Weather Statement issued September 22 at 3:17PM MDT by NWS Riverton WY

At 316 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles west of Crooks Gap, which is 13 miles southwest of Jeffrey City, moving northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unse...

Read Story →
weather

Special Weather Statement issued September 18 at 3:46PM MDT by NWS Riverton WY

At 346 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 12 miles south of Powder River to 9 miles east of Bates Hole. Movement was northeast at 20 mph. HAZARD...Wind gusts of 50 to 55 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could kn...

Read Story →
weather

Special Weather Statement issued September 18 at 2:40PM MDT by NWS Riverton WY

At 240 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms capable of producing a landspout 9 miles northwest of Castle Gardens, which is 23 miles southeast of Shoshoni, moving northeast at 30 mph. HAZARD...Landspouts, wind gusts up to 50 mph, and half inch hail. SOURCE...Radar in...

Read Story →
Scroll for more stories