Alert archive / North Dakota / Flash Flood Warnings in 2002

Flash Flood Warning 9, NWS Bismarck, ND

August 21, 2002Billings County, Dunn County, Stark County, North Dakota

NWS Bismarck, ND issued this flash flood warning at Aug 21, 2002, 6:46 AM MDT for Billings County, Dunn County, Stark 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 outline as issued.

The facts

Issued
Aug 21, 2002, 6:46 AM MDT (12:46 UTC)
Expired
Aug 21, 2002, 9:45 AM MDT
In force
3 hr
Issued by
NWS Bismarck, ND
Area
Counties, with a storm outline in the text

Counties Billings County, ND, Dunn County, ND, Stark County, ND

The radar

The Bismarck radar (KBIS), 171 km from the middle of the area, began a volume at 12:47 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 0.8 hours before the alert went out and 175 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, Bismarck Municip, ND at 12:00Z on 2002-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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, Bismarck Municip, ND at 12:00Z on 2002-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
-588 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KBIS 211246
FFWBIS
NDC007-025-089-211545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
639 AM MDT WED AUG 21 2002

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN BILLINGS COUNTY IN SOUTHWEST NORTH DAKOTA
  DUNN COUNTY IN SOUTHWEST NORTH DAKOTA
  WESTERN STARK COUNTY IN SOUTHWEST NORTH DAKOTA

* UNTIL 945 AM MDT(1045 AM CDT)

* AT 639 AM MDT(739 AM CDT)...WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN IN A LINE FROM NEAR MEDORA NORTHEAST TO KILLEER 
  ...MOVING NORTHEAST AT 15 MPH.

DOPPLER RADAR RAINFALL ESTIMATES ARE FROM 2 TO 3 INCHES.

THIS STORM IN THE HEADWATER AREAS OF BOTH THE HEART AND KNIFE RIVERS.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

LAT...LON 4727 10319 4675 10301 4750 10237 4766 10267
PRINDIVILLE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 9:40 AM MDTSevere Thunderstorm WarningBISHettinger65 min

Nearby

Flash Flood Warnings in North Dakota, 2002Every flash flood warning in 2002

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.