Alert archive / Colorado / Flash Flood Watches in 2016
Flash Flood Watch 7, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood watch at Aug 4, 2016, 2:25 PM MDT for 16 counties in Colorado; Grand County, San Juan County, Uintah County, Utah. It took effect at Aug 5, 2016, 12:00 PM MDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Aug 4, 2016, 2:25 PM MDT (20:25 UTC)
- In effect from
- Aug 5, 2016, 12:00 PM MDT
- Expired
- Aug 6, 2016, 12:00 AM MDT
- In force
- 12 hr
- Issued by
- NWS Grand Junction, CO
- Flood severity
- None
Counties Archuleta County, CO, Delta County, CO, Dolores County, CO, Eagle County, CO, Garfield County, CO, Gunnison County, CO, Hinsdale County, CO, La Plata County, CO, Mesa County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, Pitkin County, CO, Rio Blanco County, CO, San Juan County, CO, San Miguel County, CO, Grand County, UT, San Juan County, UT, Uintah County, UT
The radar
The Grand Junction radar (KGJX), 64 km from the middle of the area, began a volume at 20:25 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
Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 8.4 hours before the alert went out and 405 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1504 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, 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 this flash flood watch went out at Aug 3, 4:25 PM MDT, 22 hours earlier.
Area forecast discussion, Aug 3, 4:25 PM MDT, 22 hours before
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</html>The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 6:58 PM MDT | Areal Flood Advisory | GJT | San Miguel | 3 hr |
| Aug 4, 2:57 PM MDT | Areal Flood Advisory | GJT | Montezuma | 8 hr |
| Aug 4, 3:17 PM MDT | Areal Flood Advisory | GJT | Mesa, Montrose, San Miguel | 8 hr |
| Aug 4, 3:33 PM MDT | Areal Flood Advisory | GJT | Delta, Mesa | 4 hr |
| Aug 4, 5:02 PM MDT | Areal Flood Advisory | GJT | Montrose, San Miguel | 3 hr |
Nearby
Flash Flood Watches in Colorado, 2016Flash Flood Watches in Utah, 2016Every flash flood watch in 2016
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.