Alert archive / Utah / Flash Flood Warnings in 2017
Flash Flood Warning 11, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 19, 2017, 5:42 PM MDT for Wayne County, Utah. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2017, 5:42 PM MDT (23:42 UTC)
- Expired
- Jul 19, 2017, 8:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Wayne County, UT
The radar
The Cedar City radar (KICX), 159 km from the middle of the area, began a volume at 23:44 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, 11.7 hours before the alert went out and 258 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
- 8 J/kg
- Mixed-layer CIN
- -341 J/kg
- Mixed-layer LCL
- 2559 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
994
WGUS55 KSLC 192342
FFWSLC
UTC055-200230-
/O.NEW.KSLC.FF.W.0011.170719T2342Z-170720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
542 PM MDT WED JUL 19 2017
The National Weather Service in Salt Lake City has issued a
* Flash Flood Warning for...
Southwestern Wayne County in southern Utah...
* Until 830 PM MDT
* At 534 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain just west of Capitol Reef National Park. Radar
estimates indicate that up to 2 inches of rain has fallen in this
area. This rainfall is expected to result in flash flooding in
Sulphur Creek in Capitol Reef National park.
* Some locations that will experience flooding include...
Capitol Reef National Park and Fruita.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for flooding even in locations not receiving rain. Dry
washes, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 3828 11111 3822 11111 3821 11131 3830 11139
3831 11149 3838 11145 3827 11119
$$1 follow-up statement
308
WGUS75 KSLC 200225
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
825 PM MDT WED JUL 19 2017
UTC055-200234-
/O.EXP.KSLC.FF.W.0011.000000T0000Z-170720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wayne UT-
825 PM MDT WED JUL 19 2017
...THE FLASH FLOOD WARNING FOR SOUTHWESTERN WAYNE COUNTY WILL EXPIRE
AT 830 PM MDT...
The heavy rain has ended and the flash flood warning will be allowed
to expire. While significant flash flooding is no longer expected
area creeks and streams and normally dry washes may continue to run
high for several hours.
LAT...LON 3828 11111 3822 11111 3821 11131 3830 11139
3831 11149 3838 11145 3827 11119
$$The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 6:13 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 32 min |
| Jul 19, 2:17 AM MDT | Flash Flood Warning | SLC | Kane | 4 hr |
| Jul 19, 1:29 PM MDT | Flash Flood Warning | SLC | Sevier | 3 hr |
| Jul 19, 1:36 PM MDT | Special Weather Statement | SLC | Piute | 24 min |
| Jul 19, 2:43 PM MDT | Severe Thunderstorm Warning | SLC | Utah, Wasatch | 32 min |
| Jul 19, 3:21 PM MDT | Special Weather Statement | SLC | Utah | 39 min |
| Jul 19, 3:35 PM MDT | Areal Flood Advisory | SLC | Utah | 55 min |
| Jul 19, 4:00 PM MDT | Flash Flood Warning | SLC | Emery, Sevier, Wayne | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2017Every flash flood warning in 2017
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.