Alert archive / Colorado / Flood Watches in 2022

Flood Watch 2, NWS Denver/Boulder, CO

July 28, 20225 counties in Colorado

NWS Denver/Boulder, CO issued this flood watch at Jul 28, 2022, 8:53 AM MDT for 5 counties in Colorado. It took effect at Jul 28, 2022, 11:00 AM MDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jul 28, 2022, 8:53 AM MDT (14:53 UTC)
In effect from: Jul 28, 2022, 11:00 AM MDT
Expired: Jul 28, 2022, 7:46 PM MDT
In force: 9 hr
Issued by: NWS Denver/Boulder, CO
Flood severity: None

Counties Boulder County, CO, Broomfield County, CO, Jefferson County, CO, Larimer County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 64 km from the middle of the area, began a volume at 14:55 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

Grand Junction, CO (KGJT), launched 12:00Z, 2.9 hours before the alert went out and 313 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2060 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Jul 28, 4:38 AM MDT, 4 hours 15 minutes earlier.

Area forecast discussion, Jul 28, 4:38 AM MDT, 4 hours 15 minutes before

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Hazardous weather outlook, Jul 28, 4:03 AM MDT, 4 hours 50 minutes before

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In the hours before

Special weather statement, Jul 28, 5:27 AM MDT, 3 hours 26 minutes before

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Local storm report, Jul 28, 8:37 AM MDT, 16 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
Jul 27, 6:05 PM MDT	Severe Thunderstorm Warning	BOU	Weld	25 min
Jul 27, 6:51 PM MDT	Severe Thunderstorm Warning	BOU	Larimer, Weld	39 min
Jul 27, 7:06 PM MDT	Severe Thunderstorm Warning	BOU	Weld	39 min
Jul 27, 7:27 PM MDT	Severe Thunderstorm Warning	BOU	Larimer, Weld	48 min
Jul 27, 7:43 PM MDT	Severe Thunderstorm Warning	BOU	Weld	34 min
Jul 27, 8:02 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Larimer, Weld	43 min
Jul 27, 8:22 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	53 min
Jul 27, 8:25 PM MDT	Flash Flood Warning	BOU	Park	3 hr
Jul 27, 8:29 PM MDT	Flash Flood Warning Considerable damage threat	BOU	Larimer	3 hr
Jul 27, 8:37 PM MDT	Flash Flood Warning	BOU	Larimer	3 hr
Jul 27, 8:42 PM MDT	Severe Thunderstorm Warning	BOU	Washington	34 min
Jul 27, 9:11 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	23 min
Jul 27, 9:22 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Washington	38 min
Jul 27, 9:39 PM MDT	Severe Thunderstorm Warning	BOU	Boulder	32 min
Jul 27, 9:53 PM MDT	Areal Flood Advisory	BOU	Boulder	3 hr
Jul 27, 9:58 PM MDT	Areal Flood Advisory	BOU	Logan, Washington	3 hr
Jul 27, 10:02 PM MDT	Flash Flood Warning	BOU	Boulder	81 min
Jul 27, 10:19 PM MDT	Areal Flood Advisory	BOU	Boulder	116 min
Jul 27, 10:26 PM MDT	Severe Thunderstorm Warning	BOU	Washington	34 min
Jul 27, 10:31 PM MDT	Areal Flood Advisory	BOU	Jefferson	119 min
Jul 27, 10:36 PM MDT	Flash Flood Warning	BOU	Boulder	96 min
Jul 27, 10:48 PM MDT	Flash Flood Warning	BOU	Logan, Washington	117 min
Jul 27, 10:54 PM MDT	Areal Flood Advisory	BOU	Jefferson	2 hr
Jul 27, 10:55 PM MDT	Areal Flood Advisory	BOU	Boulder	3 hr
Jul 27, 10:59 PM MDT	Severe Thunderstorm Warning	BOU	Washington	46 min
Jul 27, 11:15 PM MDT	Severe Thunderstorm Warning	BOU	Washington	45 min
Jul 27, 11:27 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Denver, Douglas, Jefferson	33 min
Jul 27, 11:31 PM MDT	Areal Flood Advisory	BOU	Arapahoe, Denver, Douglas, Jefferson	119 min
Jul 27, 11:43 PM MDT	Severe Thunderstorm Warning	BOU	Washington	32 min
Jul 27, 11:50 PM MDT	Areal Flood Advisory	BOU	Washington	115 min
Jul 27, 11:55 PM MDT	Areal Flood Advisory	BOU	Douglas	109 min
Jul 27, 11:58 PM MDT	Areal Flood Advisory	BOU	Logan, Morgan, Washington	2 hr
Jul 28, 12:02 AM MDT	Flash Flood Warning	BOU	Washington	118 min
Jul 28, 12:10 AM MDT	Severe Thunderstorm Warning	BOU	Washington	35 min
Jul 28, 12:26 AM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	34 min
Jul 28, 1:14 AM MDT	Areal Flood Advisory	BOU	Washington	2 hr
Jul 28, 1:18 AM MDT	Flash Flood Warning	BOU	Washington	117 min
Jul 28, 1:22 AM MDT	Areal Flood Advisory	BOU	Morgan	113 min
Jul 28, 1:46 AM MDT	Areal Flood Advisory	BOU	Elbert, Lincoln	119 min
Jul 28, 2:03 AM MDT	Areal Flood Warning	BOU	Washington	3 hr
Jul 28, 2:31 AM MDT	Areal Flood Advisory	BOU	Larimer	119 min
Jul 28, 3:07 AM MDT	Areal Flood Advisory	BOU	Washington	113 min
Jul 28, 5:27 AM MDT	Special Weather Statement	BOU	Weld	33 min
Jul 28, 11:08 AM MDT	Areal Flood Advisory	BOU	Logan, Morgan, Washington, Weld	7 hr
Jul 28, 1:52 PM MDT	Areal Flood Advisory	BOU	Jackson	3 hr
Jul 28, 2:22 PM MDT	Areal Flood Advisory	BOU	Grand, Larimer	3 hr
Jul 28, 2:49 PM MDT	Flash Flood Warning	BOU	Larimer	3 hr
Jul 28, 3:46 PM MDT	Flash Flood Warning Considerable damage threat	BOU	Grand	3 hr
Jul 28, 5:55 PM MDT	Areal Flood Advisory	BOU	Douglas, Jefferson	3 hr

Nearby

Flood Watches in Colorado, 2022 Every flood watch in 2022

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.