Johnson County WY Emergency Management

Johnson County WY Emergency Management Office of Emergency Management for Johnson County Wyoming

09/01/2026

📢 Join Johnson County Public Health in celebrating National Preparedness Month! Get essential tips on how to stay ready for anything life throws your way, and don’t miss out on our exciting giveaway! 🎉 Follow us for more details! Johnson County WY Emergency Management

BULLETIN - IMMEDIATE BROADCAST REQUESTEDSevere Thunderstorm WarningNational Weather Service Riverton WY717 PM MDT Sat Au...
08/23/2026

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Riverton WY
717 PM MDT Sat Aug 22 2026

The National Weather Service in Riverton has issued a

* Severe Thunderstorm Warning for...
Northeastern Natrona County in central Wyoming...
Southeastern Johnson County in north central Wyoming...

* Until 800 PM MDT.

* At 717 PM MDT, a severe thunderstorm was located near Edgerton,
which is 27 miles southeast of Kaycee, moving southeast at 10 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
northeastern Natrona and southeastern Johnson Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4349 10608 4336 10607 4333 10623 4354 10631
4359 10615 4350 10604
TIME...MOT...LOC 0117Z 330DEG 10KT 4349 10617

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

FLOOD ADVISORY IN EFFECT UNTIL 930 PM MDT THIS EVENING...* WHAT...Flooding caused by excessive rainfall is expected.* WH...
08/23/2026

FLOOD ADVISORY IN EFFECT UNTIL 930 PM MDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...East Central Johnson County in north central Wyoming...

* WHEN...Until 930 PM MDT.

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

* ADDITIONAL DETAILS...
- At 629 PM MDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1.5 and 2.5 inches of rain
have fallen.
- This includes the following streams and drainages...
South Fork Fourmile Creek, Cat Creek, Timber Draw, Red Draw,
Crazy Woman Creek, Powder River, Walker Draw, Curtis Draw, Horse
Creek, Indian Creek, North Fork Fourmile Creek, Fourmile Creek,
Ninemile Creek and Cow Creek.
- Some locations that will experience flooding include...
Mainly rural areas of East Central Johnson County.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&

LAT...LON 4417 10633 4413 10640 4407 10644 4398 10643
4396 10642 4396 10631 4397 10627 4404 10625
4406 10620 4412 10620

Are you interested in joining the Johnson County Exercise Contingent? Do you want to play an active role in strengthenin...
08/18/2026

Are you interested in joining the Johnson County Exercise Contingent? Do you want to play an active role in strengthening our local government’s emergency preparedness and see our plans come to life in real time? Are you curious about Civil Defense or Emergency Management?

This is your chance to get a front‑row seat! Enjoy a provided meal, spend 4–5 hours getting fresh air and exercise (weather permitting), and be part of an important community effort.

If you’re interested, contact Johnson County Emergency Management:

Johnson County Emergency Management
26 N. DeSmet Ave, Suite B
Buffalo, WY 82834
307‑684‑2761
[email protected]

Please join us this Thursday morning, 9 AM for this quarter's Local Emergency Planning Commission meeting. All are welc...
08/11/2026

Please join us this Thursday morning, 9 AM for this quarter's Local Emergency Planning Commission meeting. All are welcome to attend and this is your chance to be a part of the emergency planning for Johnson County.

Location:
Planning Meeting Room, Annex A Building
26 N. DeSmet Ave.
Buffalo, WY 82834

Key Messages:________________________________________• Hot, dry and breezy conditions return across the area Tuesday, wi...
08/11/2026

Key Messages:
________________________________________

• Hot, dry and breezy conditions return across the area Tuesday, with Red Flag Warnings in effect from 12pm to 9 pm.

• Virga showers/dry thunderstorms will occur over southern portions of the forecast area this afternoon, ending by sunset.

• A weather pattern shift will start tonight as clouds increase. This will lead to cooler temperatures Wednesday and increased rain chances. This cooler and wetter pattern will continue through the rest of the week.



Recent Updates:
________________________________________

• Air Quality Alerts for smoke impacts remain in effect through 12pm Tuesday and may be extended again this afternoon into Wednesday.

Key Messages:________________________________________• Near critical to critical fire weather conditions continue today ...
08/10/2026

Key Messages:
________________________________________

• Near critical to critical fire weather conditions continue today and Tuesday.

• Low minimum relative humidity values, gusty westerly winds and hot temperatures expected both days.

• Cooler temperatures and increasing precipitation chances from Wednesday into the weekend.

Recent Updates:
________________________________________

• Red Flag Warnings have been reissued across much of the forecast area for today for wind, critical RHs and potential for dry thunderstorms. Warnings likely needed again Tuesday, but winds will not be as strong or as widespread. Conditions will be dry Tuesday as well.

RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 9 PM MDTSUNDAY...The National Weather Service in Riverton has issued a...
08/07/2026

RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 9 PM MDT
SUNDAY...

The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from 11 AM Saturday to 9 PM MDT
Sunday.

* IMPACTS: Low Humidities and Strong Gusty Winds could cause
erratic fire behavior.

* AFFECTED AREA:
In Central WY Fire Zones...280...283...285...300.
In North Central WY Fire Zones...275...276...281...282...287.
In Northwest WY Fire Zones...140...286.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park
Washakie.
In Northwest WY...Yellowstone National Park.

* WIND: Northwest 10 to 20 mph with gusts up to 30 mph.

* HUMIDITY: As low as 8 percent. Humidity recovery each night remains
below 40 percent.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT SUNDAY...The National Weather Service in Riverton has issued a Red Flag...
08/01/2026

RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT SUNDAY...

The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM MDT Sunday. the Fire
Weather Watch is no longer in effect.

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty
Winds could cause erratic fire behavior.

* AFFECTED AREA:
In Central WY Fire Zones...283...285.
In North Central WY Fire Zones...275...276...282.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park
Washakie.

* WIND: West 10 to 20 mph with gusts to 30 mph.

* HUMIDITY: 5 to 10 percent.

* TEMPERATURES: Highs in the upper 90s to low 100s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

Key Messages:It will be a very hot weekend, with near-record temperatures likely for most locations on Sunday 8/2.Dry co...
07/31/2026

Key Messages:
It will be a very hot weekend, with near-record temperatures likely for most locations on Sunday 8/2.

Dry conditions with low humidities and breezy afternoon winds are likely to lead to critical fire weather conditions for portions of western and central Wyoming Sunday 8/2 into Monday 8/3.

A cold front on Monday will cool temperatures and bring more moist air into the region, reducing both weather concerns.
Recent Updates:
Fire Weather Watches have been added to portions of western and central Wyoming.

Minimal changes in the temperature forecast, with Heat Advisories continuing for Saturday afternoon through Sunday.

Address

26 N. DeSmet Avenue
Buffalo, WY
82834

Telephone

+13076842761

Website

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