Alert archive / Washington / Flash Flood Warnings in 2016
Flash Flood Warning 7, NWS Spokane, WA
NWS Spokane, WA issued this flash flood warning at Jul 19, 2016, 5:51 PM PDT for Okanogan County, Washington. 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, 2016, 5:51 PM PDT (00:51 UTC)
- Expired
- Jul 19, 2016, 8:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
- Flood severity
- None
County Okanogan County, WA
The radar
The Seattle radar (KATX), 164 km from the middle of the area, began a volume at 00:51 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
Spokane, WA (KOTX), launched 00:00Z, 0.9 hours before the alert went out and 301 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.
528
WGUS56 KOTX 200051
FFWOTX
WAC047-200345-
/O.NEW.KOTX.FF.W.0007.160720T0051Z-160720T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
551 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 845 PM PDT
* AT 547 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE LITTLE BRIDGE CREEK BURN SCAR. THIS MAY
CAUSE FLASH FLOODING TO BEGIN SHORTLY. EXCESSIVE RAINFALL OVER THE
BURN SCAR WILL RESULT IN DEBRIS FLOW MOVING DOWN LITTLE BRIDGE
CREEK DOWN TO THE TWISP RIVER INN. THE DEBRIS FLOW CAN CONSIST OF
ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.
* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTHWESTERN
OKANOGAN COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.
&&
LAT...LON 4846 12024 4835 12020 4836 12038 4841 12039
4847 12037
$$
BT1 follow-up statement
899
WGUS76 KOTX 200250
FFSOTX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
750 PM PDT TUE JUL 19 2016
WAC047-200259-
/O.CAN.KOTX.FF.W.0007.000000T0000Z-160720T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OKANOGAN WA-
750 PM PDT TUE JUL 19 2016
...THE FLASH FLOOD WARNING FOR SOUTHWESTERN OKANOGAN COUNTY IS
CANCELLED...
THE HEAVY RAIN HAS MOVED OUT OF THE AREA AND FLOODING IS NO LONGER
EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING
ROAD CLOSURES.
LAT...LON 4846 12024 4835 12020 4836 12038 4841 12039
4847 12037
$$
BTThe 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, 5:37 PM PDT | Flash Flood Warning | OTX | Okanogan | 113 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.