Alert archive / Idaho / Flash Flood Warnings in 1998

Flash Flood Warning 2, NWS Spokane, WA

July 2, 1998Benewah County, Latah County, Shoshone County, Idaho

NWS Spokane, WA issued this flash flood warning at Jul 2, 1998, 10:35 PM PDT for Benewah County, Latah County, Shoshone County, Idaho. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 2, 1998, 10:35 PM PDT (05:35 UTC)
Expired
Jul 2, 1998, 11:40 PM PDT
In force
65 min
Issued by
NWS Spokane, WA
Area
Whole counties

Counties Benewah County, ID, Latah County, ID, Shoshone County, ID

The radar

The Spokane radar (KOTX), 110 km from the middle of the area, began a volume at 05:38 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.

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 5.6 hours before the alert went out and 64 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.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 00:00Z on 1998-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 255 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 00:00Z on 1998-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
255 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
2431 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGEG 030534
FFWGEG
IDC009-057-079-030640-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
1035 PM PDT THU JUL 2 1998

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME EASTERN BENEWAH COUNTY IN NORTHERN IDAHO
  EXTREME NORTHEASTERN LATAH COUNTY IN NORTHERN IDAHO
  WESTERN SHOSHONE COUNTY IN NORTHERN IDAHO

* UNTIL 1140 PM PDT

* AT 1000 PM PDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM WITH VERY HEAVY RAIN SOUTHEAST BENEWAH COUNTY...
  MOVING SLOWLY NORTH.

* VERY HEAVY RAIN WILL CONTINUE IN THE AFFECTED AREAS

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

STROBIN/CARTER


0

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 2, 10:02 PM PDTFlash Flood WarningOTXLatah33 min
Jul 2, 10:02 PM PDTSevere Thunderstorm WarningOTXLatah33 min
Jul 2, 10:27 PM PDTSevere Thunderstorm WarningOTXBenewah, Shoshone48 min
Jul 3, 4:18 PM PDTSevere Thunderstorm WarningOTXBoundary47 min

Nearby

Flash Flood Warnings in Idaho, 1998Every flash flood warning in 1998

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.