WWA Summary for All Issued by FGZ

Extreme Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
232 AM PDT Sat May 31 2025

AZZ036-CAZ522>524-NVZ016-017-020>022-010600-
/O.CON.KVEF.XH.W.0001.000000T0000Z-250601T0600Z/
Lake Mead National Recreation Area-Death Valley National Park-
Western Mojave Desert-Eastern Mojave Desert-Northeast Clark
County-Western Clark and Southern Nye County-Las Vegas Valley-
Lake Mead National Recreation Area-Southern Clark County-
Including the cities of Desert Rock, Pahrump, Laughlin, Daggett,
Mesquite, Cal-Nev-Ari, Fort Irwin, Mountain Pass, Las Vegas,
Henderson, Boulder City, Searchlight, Primm, Bullhead City,
Moapa, Mohave Valley, Shoshone, Amargosa Valley, North Las Vegas,
Oatman, Stovepipe Wells, Furnace Creek, Mitchell Caverns, Baker,
Indian Springs, Hoover Dam, Barstow, and Overton
232 AM PDT Sat May 31 2025 /232 AM MST Sat May 31 2025/

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 11 PM PDT /11 PM
MST/ THIS EVENING...

* WHAT...Dangerously hot conditions with a major risk for heat
  related illness and impacts.

* WHERE...Lake Mead National Recreation Area, Death Valley National
  Park, Western Mojave Desert, Eastern Mojave Desert, Northeast
  Clark County, Western Clark and Southern Nye County, Las Vegas
  Valley, and Southern Clark County.

* WHEN...Until 11 PM PDT /11 PM MST/ this evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

* ADDITIONAL DETAILS...Temperatures today will reach 105 to 110 in
  the Lake Mead Recreation Area, 100 to 105 in the western Mojave
  Desert including Barstow, and 103 to 109 in the valleys of
  southern Nevada including Pahrump, Las Vegas, and Moapa.
  Temperatures over 115 are likely in Death Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Monitor the latest forecasts and warnings for updates.

If you do not have air conditioning in your home or lack shelter,
monitor for local cooling shelters openings and assistance locating
appropriate shelter from the heat.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/lasvegas

SM

Flood Watch

Flood Watch
National Weather Service Tucson AZ
914 PM MST Sat May 31 2025

AZZ501-502-515-011400-
/O.CON.KTWC.FA.A.0001.250601T1400Z-250602T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Pima County-Tohono O`odham Nation-Baboquivari Mountains-
Including the cities of Organ Pipe Cactus N.M., Kitt Peak, Ajo,
and Sells
914 PM MST Sat May 31 2025

...FLOOD WATCH REMAINS IN EFFECT FROM 7 AM MST SUNDAY THROUGH SUNDAY
AFTERNOON...

* WHAT...Flash flooding caused by excessive rainfall continues to be
  possible.

* WHERE...A portion of Southeast Arizona, including the following
  areas, Baboquivari Mountains, Tohono O`odham Nation and Western
  Pima County.

* WHEN...From 7 AM MST Sunday through Sunday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - An approaching weather system will tap into tropical moisture
    from the south and develop showers and isolated thunderstorms
    on Sunday. Some of the storms will produce heavy rain that
    may lead to isolated flash flooding issues.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

Flood Watch
National Weather Service Tucson AZ
914 PM MST Sat May 31 2025

AZZ503>507-513-514-011400-
/O.CON.KTWC.FA.A.0001.250601T2000Z-250602T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Santa Cruz River Valley/Altar Valley-Tucson Metro Area-
South Central Pinal County-Southeast Pinal County-Upper San Pedro
River Valley-Dragoon and Mule and Huachuca and Santa Rita
Mountains-Catalina and Rincon Mountains-
Including the cities of Mammoth, Oracle, Tucson, Vail, Canelo
Hills, Mount Lemmon, Summerhaven, Benson, Green Valley, Picacho
Peak State Park, Bisbee, Madera Canyon, Sierra Vista, Marana, and
Nogales
914 PM MST Sat May 31 2025

...FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be
  possible.

* WHERE...A portion of Southeast Arizona, including the following
  areas, Catalina and Rincon Mountains, Dragoon and Mule and
  Huachuca and Santa Rita Mountains, South Central Pinal County,
  Southeast Pinal County, Tucson Metro Area, Upper San Pedro River
  Valley and Upper Santa Cruz River Valley/Altar Valley.

* WHEN...From Sunday afternoon through Sunday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - An approaching weather system will tap into tropical moisture
    from the south and develop showers and thunderstorms on
    Sunday. Some of the storms will produce heavy rain that may
    lead to isolated flash flooding issues.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

CWR

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
349 AM MDT Sat May 31 2025

COZ001>014-017>023-UTZ022>025-027>029-011000-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
349 AM MDT Sat May 31 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Isolated afternoon showers and thunderstorms will develop over the
higher terrain today, mostly along the Divide. The primary threats
from these storms will be lightning, and gusty outflow winds 40 to 50
mph. Showers quickly diminish early this evening with quiet
conditions returning overnight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Isolated afternoon showers and thunderstorms continue Sunday over
the higher terrain along the Divide. Gusty winds, lightning, and
small hail can be expected with these storms. Remnants of Tropical
Storm Alvin moves up into the region Monday through midweek bringing
widespread showers, scattered thunderstorms and a possible threat of
localized flash flooding in areas prone to heavy runoff.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$