Alert archive / Utah / Flash Flood Warnings in 2016
Flash Flood Warning 18, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 10, 2016, 5:39 PM MDT for Kane County, Washington County, Utah. It was in force for 2 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
- Aug 10, 2016, 5:39 PM MDT (23:39 UTC)
- Expired
- Aug 10, 2016, 7:45 PM MDT
- In force
- 2 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kane County, UT, Washington County, UT
The radar
The Cedar City radar (KICX), 41 km from the middle of the area, began a volume at 23:41 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.7 hours before the alert went out and 245 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
- 905 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 636 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted.
526
WGUS55 KSLC 102342
FFWSLC
UTC025-053-110145-
/O.NEW.KSLC.FF.W.0018.160810T2339Z-160811T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
539 PM MDT WED AUG 10 2016
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL KANE COUNTY IN UTAH...
EAST CENTRAL WASHINGTON COUNTY IN UTAH...
* UNTIL 745 PM MDT
* AT 539 PM MDT...DUE TO A NEW WAVE OF THUNDERSTORMS MOVING THROUGH
ZION NATIONAL PARK...THE FLASH FLOOD WARNING ISSUED EARLIER HAS
BEEN EXTENDED FOR AN ADDITIONAL 2 HOURS.
* CONTINUED RAINFALL WILL MAINTAIN ELEVATED STREAMS AND RIVERS FOR
THE FORESEEABLE FUTURE. SLOT CANYONS ARE EXTREMELY SUSCEPTIBLE TO
THE ADDITIONAL RAINFALL AND WILL REMAIN QUITE DANGEROUS THROUGH
THE EVENING HOURS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ZION NATIONAL PARK...SPRINGDALE AND ROCKVILLE.
LAT...LON 3733 11286 3717 11286 3708 11301 3714 11313
3732 11303
$$
MCINERNEY2 follow-up statements
130
WGUS75 KSLC 110119
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
714 PM MDT WED AUG 10 2016
UTC025-053-110145-
/O.CON.KSLC.FF.W.0018.000000T0000Z-160811T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-WASHINGTON UT-
714 PM MDT WED AUG 10 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
WEST CENTRAL KANE AND EAST CENTRAL WASHINGTON COUNTIES...
AT 714 PM MDT...DUE TO THE SECOND ROUND OF THUNDERSTORMS MOVING
THROUGH ZION NATIONAL PARK...THE NORTH FORK OF THE VIRGIN RISE ROSE
ONCE AGAIN FROM 160 CUBIC FEET PER SECOND (CFS) TO 1480 CFS.
ADDITIONALLY...A HOUSE SIZE BOULDER ON THE MAIN PARK ROAD NEAR
CANYON JUNCTION HAS FALLEN ONTO THE ROAD DUE TO THE INTENSE
RAINFALL. OTHER FLASH FLOODING TO SMALLER SLOTS AND STREAMS MAY BE
INFERRED ALSO.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ZION NATIONAL PARK...SPRINGDALE AND ROCKVILLE.
ADDITIONAL RAINFALL MAY OCCUR THROUGH THE NIGHTTIME HOURS IN AND
AROUND THE PARK. IF YOU ARE TRAVELING THROUGH THIS AREA...PLEASE BE
VIGILANT TO THE HIGHER FLOWS.
LAT...LON 3733 11286 3717 11286 3708 11301 3714 11313
3732 11303
$$
MCINERNEY621
WGUS75 KSLC 110148
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
744 PM MDT WED AUG 10 2016
UTC025-053-110154-
/O.EXP.KSLC.FF.W.0018.000000T0000Z-160811T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-WASHINGTON UT-
744 PM MDT WED AUG 10 2016
...THE FLASH FLOOD WARNING FOR WEST CENTRAL KANE AND EAST CENTRAL
WASHINGTON COUNTIES WILL EXPIRE AT 745 PM MDT...
ALTHOUGH STREAMFLOWS THROUGHOUT ZION NATIONAL PARK REMAIN
ELEVATED...THEY ARE RECEDING. THUNDERSTORM ACTIVITY IN THE AREA IS
RECEDING. THIS MAY CHANGE AS ADDITIONAL ACTIVITY MAY MOVE THROUGH
THE PARK THROUGH THE EVENING AND NIGHTTIME HOURS.
IF THUNDERSTORMS INTENSIFY AND MOVE THROUGH THIS AREA...ADDITIONAL
FLASH FLOOD WARNINGS WILL BE ISSUED.
PLEASE REMAIN VIGILANT AS THESE DANGEROUS WATERS RECEDE.
LAT...LON 3733 11286 3717 11286 3708 11301 3714 11313
3732 11303
$$
MCINERNEYThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 3:15 AM MDT | Red Flag Warning | SLC | Box Elder, Cache, Davis, Juab, Millard, Morgan and 8 more | 24 hr |
| Aug 10, 12:33 PM MDT | Special Weather Statement | SLC | 27 min | |
| Aug 10, 1:13 PM MDT | Special Weather Statement | SLC | Washington | 47 min |
| Aug 10, 1:38 PM MDT | Special Weather Statement | SLC | Duchesne | 37 min |
| Aug 10, 1:40 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 4 hr |
| Aug 10, 1:45 PM MDT | Severe Thunderstorm Warning | SLC | Kane, Washington | 30 min |
| Aug 10, 2:17 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 28 min |
| Aug 10, 2:21 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 4 hr |
| Aug 10, 3:07 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 23 min |
| Aug 10, 3:11 PM MDT | Special Weather Statement | SLC | Salt Lake | 34 min |
| Aug 10, 4:05 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 25 min |
| Aug 10, 4:37 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 23 min |
Nearby
Flash Flood Warnings in Utah, 2016Every flash flood warning 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.