Alert archive / Washington / Flash Flood Warnings in 1996
Flash Flood Warning 4, NWS Spokane, WA
NWS Spokane, WA issued this flash flood warning at Dec 31, 1996, 2:30 PM PST for 4 counties in Washington. It was in force for 15 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 31, 1996, 2:30 PM PST (22:30 UTC)
- Expired
- Jan 1, 1997, 5:00 AM PST
- In force
- 15 hr
- Issued by
- NWS Spokane, WA
- Area
- Whole counties
Counties Ferry County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.5 hours before the alert went out and 119 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
- 706 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Spokane, WA wrote its last area forecast discussion before this flash flood warning went out at Dec 31, 1:48 PM PST, 42 minutes earlier.
Area forecast discussion, Dec 31, 1:48 PM PST, 42 minutes before
EASTERN WASHINGTON AND NORTH IDAHO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WASHINGTON
100 PM PST TUE DEC 31 1996
APPEAR THAT MDLS ARE A LTL SLOW AND WEST WITH PLACEMENT OF BIG SYS
MOVG ONSHR. WITH LONG FETCH OF MSTR FEEDING INTO SYS.. THE MDLS MAY
UNDERESTIMATE THE AMNT OF RAINFALL THE RGN ACTUALLY RECEIVES. FCST
AREA FIRST GETS THE WARM AIR ADV RAIN WITH STG SLY FLOW WITHIN THE
LWR LVLS.. THEN STG JET DYNAMICS AND SPEED SHEAR AS JET NOSES ITS WAY
INTO ERN WA FROM THE SW. KGEG MAY RECEIVE NRLY AN INCH OF RAIN BY
01/18Z WITH AS MUCH AS THREE INCHES LIKE KS06 IN THE ID PNHDL.
QPFPFD HAS COMPARED THIS MSTR PLUME AND DYNAMICS WITH THE JAN 9/10
AND MAR 10/11 1995 EVENTS.. THEREFORE WILL NOT BY SHY ABOUT RAINFALL
AMOUNTS. WITH LOWLAND FLOODING OCCURRING AT A FEW AREAS.. WILL
UPGRADE URBAN AND SMALL STREAM FLOOD ADVY TO WARNING. SW WND WILL
INCR AS WELL FOR WINDY CONDS THRU WED.
JET SAGS TO THE SOUTH OF RGN WED AFTN WITH MINOR IMPULSES IN SWLY
FLOW. MDLS WILL BE HAVING TIMING PROBLEMS WITH THESE SO WILL
BROADBRUSH. MOST OF THE ENERGY WILL BE TRAVELING THRU NRN CA. WITH
RELATIVE UNSTBL AMS AND MOIST UPSTREAM FLOW.. WILL CONT WITH POPS ABV
MOS. TEMPS CONT SEASONABLY MILD. WILL NOT DEFER MUCH FROM MOS TEMP
GUIDANCE. FRISBIE
CURRENT WRNGS.. ADVYS AND WATCHES IN EFFECT ARE..
..FLOOD WARNING FOR THE ST. JOE RIVER NEAR CALDER
..URBAN AND SMALL STREAM FLOOD WARNING FOR NE AND SE WA/ID PNHDL
IN CWA
..FLOOD WATCH FOR THE SOUTH FORK OF THE PALOUSE RIVER
..FLOOD WATCH FOR HANGMAN CREEK
...PRODUCTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE...
...PLEASE SEE SEACCFSEA AND ZONE FORECAST PRODUCTS...
GEG 039/047 03~7/043 +855
CQV 039/045 035/042 +866
S86 040/046 035/043 +966
S06 038/046 034/043 ++77
COE 039/046 037/043 +966The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 31, 2:30 PM PST | Flash Flood Warning | OTX | Asotin, Whitman | 15 hr |
| Dec 31, 2:30 PM PST | Flash Flood Warning | OTX | Garfield | 15 hr |
Nearby
Flash Flood Warnings in Washington, 1996Every flash flood warning in 1996
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.