Alert archive / Washington / Flash Flood Warnings in 2016
Flash Flood Warning 6, NWS Spokane, WA
NWS Spokane, WA issued this flash flood warning at Jul 19, 2016, 5:37 PM PDT for Okanogan County, Washington. It was in force for 113 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 19, 2016, 5:37 PM PDT (00:37 UTC)
- Expired
- Jul 19, 2016, 7:30 PM PDT
- In force
- 113 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
- Flood severity
- None
County Okanogan County, WA
The radar
The Spokane radar (KOTX), 186 km from the middle of the area, began a volume at 00:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 19, 5:45 PM PDT | FLASH FLOOD | 3 Sw Loup Loup Campgrou, WA | REPORT OF FLASH FLOODING AT HIGHWAY 20 MP 211 FOUR MILES WEST OF LOUP LOUP SUMMIT. A DEBRIS FLOW WENT ACROSS THE ROAD. |
| Jul 19, 5:45 PM PDT | FLASH FLOOD | 3 Sw Loup Loup Campgrou, WA | REPORT OF FLASH FLOODING AT MP 211 FOUR MILES WEST OF LOUP LOUP SUMMIT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 0.6 hours before the alert went out and 272 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
- 138 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1901 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
500
WGUS56 KOTX 200037
FFWOTX
WAC047-200230-
/O.NEW.KOTX.FF.W.0006.160720T0037Z-160720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
537 PM PDT TUE JUL 19 2016
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN OKANOGAN COUNTY IN NORTHEASTERN WASHINGTON...
* UNTIL 730 PM PDT
* AT 533 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. A RAIN GAUGE PICKED UP 1 INCH
OF RAIN ALREADY IN LESS THAN ONE HOUR. FLASH FLOODING IS EXPECTED
TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LOUP LOUP PASS AND LOUP LOUP CAMPGROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
THE AFFECTED AREAS ARE IN AND BELOW THE CARLTON COMPLEX FIRE BURN
SCARS ABOVE THE METHOW RIVER VALLEY. HIGH INTENSITY RAINFALL ON THE
BURNED AREAS MAY CAUSE FLASH FLOODING...DEBRIS FLOWS...MUD SLIDES AND
ROCK SLIDES. RESIDENTS AND MOTORISTS IN AND BELOW THE CARLTON COMPLEX
FIRE BURN SCAR IN THE METHOW VALLEY...INCLUDING MOTORISTS ON HIGHWAY
20 EAST OF TWISP NEAR LOUP LOUP PASS...SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 4840 11986 4830 11986 4831 12001 4841 11999
$$
JWThe office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 5:08 PM PDT | Flash Flood Warning | OTX | Chelan, Douglas | 112 min |
| Jul 19, 5:51 PM PDT | Flash Flood Warning | OTX | Okanogan | 3 hr |
Nearby
Flash Flood Warnings in Washington, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.