Alert archive / North Dakota / Flash Flood Warnings in 1998

Flash Flood Warning 2, NWS Bismarck, ND

July 5, 1998Williams County, North Dakota

NWS Bismarck, ND issued this flash flood warning at Jul 5, 1998, 1:15 AM CDT for Williams County, North Dakota. 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 counties it named.

The facts

Issued: Jul 5, 1998, 1:15 AM CDT (06:15 UTC)
Expired: Jul 5, 1998, 4:15 AM CDT
In force: 3 hr
Issued by: NWS Bismarck, ND
Area: Whole counties

County Williams County, ND

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.3 hours before the alert went out and 231 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2813 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KISN 050613
FFWISN
NDC105-050915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
115 AM CDT SUN JUL 5 1998

THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WILLIAMS COUNTY IN NORTHWESTERN NORTH DAKOTA

* UNTIL 415 AM CDT

* AT 110 AM CDT... SPOTTERS AND NATIONAL SERVICE WEATHER
RADAR INDICATED AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN
COVERING MOST OF WILLIAMS COUNTY... MOVING EAST AT 20 MPH.

* NUMEROUS STREETS AND LOW-LYING AREAS ARE REPORTED TO BE FLOODED
  OVER THE COUNTY

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGER OF FLOODING.

FISHER

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 4, 10:50 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	60 min
Jul 4, 11:56 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	59 min
Jul 5, 1:30 AM CDT	Flash Flood Warning	BIS	Mountrail	3 hr
Jul 5, 6:55 PM CDT	Tornado Warning	BIS	Burke	50 min

Nearby

Flash Flood Warnings in North Dakota, 1998 Every 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.