Alert archive / Colorado / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 87, NWS Denver/Boulder, CO

June 7, 2024Adams County, Arapahoe County, Denver County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 7, 2024, 7:54 PM MDT for Adams County, Arapahoe County, Denver County, Colorado. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 7, 2024, 7:54 PM MDT (01:54 UTC)
Expired: Jun 7, 2024, 8:30 PM MDT
In force: 36 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Adams County, CO, Arapahoe County, CO, Denver County, CO

The radar

The Denver radar (KFTG), 4 km from the middle of the area, began a volume at 01:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.9 hours before the alert went out and 365 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1610 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1911 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 10.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 6:09 PM MDT, 1 hour 45 minutes earlier.

Area forecast discussion, Jun 7, 6:09 PM MDT, 1 hour 45 minutes before

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Hazardous weather outlook, Jun 7, 11:12 AM MDT, 8 hours 42 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1112 AM MDT Fri Jun 7 2024

COZ030>051-081715-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1112 AM MDT Fri Jun 7 2024

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...This Afternoon and Tonight

Hot temperatures are forecast across the region with highs in the
upper 80s to mid 90s across most of the plains. Scattered showers
and thunderstorms are expected to develop this afternoon. Storms
may contain gusty outflow winds with gusts up to 45 mph possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are likely on Saturday afternoon and evening as a
cold front moves through. Some of the storms could be severe with
large hail and damaging winds. Showers and thunderstorms are
likely Sunday over the Front Range and in areas just east of the
mountains including Denver. Elsewhere, scattered thunderstorms are
expected. The threat of severe storms is lower, but heavy rain is
possible with some of the storms.

There will be a drying and warming trend next week. There will
still be a threat of a few severe storms on Monday, then the storm
activity will be very limited as hot weather returns.

There is a limited threat for flash flooding over the burn areas
Saturday through Monday, with the greatest threat on Sunday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Local storm report, Jun 7, 2:53 PM MDT, 5 hours 1 minute before

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Special weather statement, Jun 7, 3:44 PM MDT, 4 hours 10 minutes before

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Local storm report, Jun 7, 5:17 PM MDT, 2 hours 37 minutes before

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Special weather statement, Jun 7, 6:02 PM MDT, 1 hour 52 minutes before

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Local storm report, Jun 7, 6:10 PM MDT, 1 hour 44 minutes before

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Special weather statement, Jun 7, 7:41 PM MDT, 13 minutes before

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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 7, 6:02 PM MDT	Special Weather Statement	BOU	Weld	43 min
Jun 7, 7:41 PM MDT	Special Weather Statement	BOU	Broomfield, Denver	49 min
Jun 7, 9:08 PM MDT	Special Weather Statement	BOU	Jefferson	37 min
Jun 8, 1:15 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	45 min
Jun 8, 1:34 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Elbert	41 min
Jun 8, 2:06 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Washington	39 min
Jun 8, 2:10 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert	35 min
Jun 8, 2:14 PM MDT	Severe Thunderstorm Warning	BOU	Weld	46 min
Jun 8, 2:41 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	49 min
Jun 8, 2:44 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Washington	31 min
Jun 8, 2:46 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	44 min
Jun 8, 2:53 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Weld	37 min
Jun 8, 3:14 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Washington, Weld	46 min
Jun 8, 3:19 PM MDT	Special Weather Statement	BOU	Denver	41 min
Jun 8, 3:24 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Logan, Morgan, Weld	36 min
Jun 8, 3:24 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	36 min
Jun 8, 3:28 PM MDT	Special Weather Statement	BOU	Boulder	47 min
Jun 8, 3:29 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	46 min
Jun 8, 3:34 PM MDT	Areal Flood Advisory	BOU	Morgan, Weld	3 hr
Jun 8, 3:49 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Lincoln	41 min
Jun 8, 3:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Adams, Arapahoe, Morgan, Washington	47 min
Jun 8, 3:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Lincoln	32 min
Jun 8, 4:17 PM MDT	Areal Flood Advisory	BOU	Lincoln	3 hr
Jun 8, 4:20 PM MDT	Tornado Warning	BOU	Morgan, Washington	25 min
Jun 8, 4:26 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert, Lincoln, Washington	49 min
Jun 8, 4:28 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Lincoln	47 min
Jun 8, 4:42 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Elbert	33 min
Jun 8, 4:55 PM MDT	Areal Flood Advisory	BOU	Adams, Morgan, Washington	3 hr
Jun 8, 5:07 PM MDT	Severe Thunderstorm Warning	BOU	Washington	23 min
Jun 8, 5:09 PM MDT	Areal Flood Advisory	BOU	Arapahoe, Elbert	2 hr
Jun 8, 5:11 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert, Lincoln, Washington	49 min
Jun 8, 5:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Lincoln	30 min
Jun 8, 5:24 PM MDT	Areal Flood Advisory	BOU	Larimer	3 hr
Jun 8, 5:25 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	35 min
Jun 8, 5:26 PM MDT	Areal Flood Advisory	BOU	Washington	2 hr
Jun 8, 5:26 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Lincoln	14 min
Jun 8, 5:39 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	51 min
Jun 8, 5:48 PM MDT	Areal Flood Advisory	BOU	Grand	112 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2024 Every severe thunderstorm warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.