Colorado, 2019

Frost and Freeze in Colorado, May 1 to 2, 2019

May 1 to 2, 2019 · NWS GJT · 3 events in 3 counties and zones

Clearing skies in the wake of an exiting winter storm allowed temperatures to drop below freezing across portions of Western Colorado.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GJT wrote it up.

Clearing skies in the wake of an exiting winter storm allowed temperatures to drop below freezing across portions of Western Colorado.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Junction, CO wrote its last area forecast discussion before the first event at May 1, 4:35 PM MST, 4 hours 41 minutes earlier.

Area forecast discussion, May 1, 4:35 PM MST, 4 hours 41 minutes before
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Hazardous weather outlook, May 1, 1:24 AM MST, 19 hours 52 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 frost/freeze. Local standard time, as filed.

Frost/Freeze, Central Colorado River Basin

When
May 1, 9:16 PM MST to May 2, 7:46 AM MST
Where
Central Colorado River Basin forecast zone
Reported by
AWOS
Coordinates
39.481, -107.172 (the zone’s center; the record gives no point)

Over half of the sites in the forecast zone experienced temperatures ranging from 24 to 30 degrees F for several hours.

Frost/Freeze, Lower Yampa River Basin

When
May 1, 11:35 PM MST to May 2, 6:55 AM MST
Where
Lower Yampa River Basin forecast zone
Reported by
RAWS
Coordinates
40.066, -108.109 (the zone’s center; the record gives no point)

All observations sites within the zone recorded temperatures between 27 and 32 degrees F for several hours.

Frost/Freeze, Debeque to Silt Corridor

When
May 2, 1:44 AM MST to 7:04 AM MST
Where
Debeque to Silt Corridor forecast zone
Reported by
ASOS
Coordinates
39.308, -108.185 (the zone’s center; the record gives no point)

Over half of the forecast zone experienced temperatures ranging from 30 to 32 degrees F.

What these are

Frost/Freeze
Frost or temperatures at or below freezing during the growing season, usually filed for crop damage.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2019Every state in 2019This day in weather historyWarnings in Colorado, May 2019

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 814931, 814929, 814930.