Alert archive / North Dakota / Tornado Warnings in 1998

Tornado Warning 23, NWS Bismarck, ND

August 22, 1998Grant County, North Dakota

NWS Bismarck, ND issued this tornado warning at Aug 22, 1998, 8:05 PM MDT for Grant County, North Dakota. It was in force for 30 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
Aug 22, 1998, 8:05 PM MDT (02:05 UTC)
Expired
Aug 22, 1998, 8:35 PM MDT
In force
30 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County Grant County, ND

The radar

The Bismarck radar (KBIS), 81 km from the middle of the area, began a volume at 02:09 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 00:00Z, 2.1 hours before the alert went out and 85 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 00:00Z on 1998-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1002 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 1998-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939587897Sfc1 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
1002 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
2045 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBIS 230208 RRA
TORBIS
NDC037-230235-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
905 PM CDT (805 PM MDT) SAT AUG 22 1998

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN GRANT COUNTY IN SOUTH CENTRAL NORTH DAKOTA

* UNTIL 835 PM MDT (935 PM CDT)

* AT 800 PM MDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 55 MILES SOUTHEAST OF DICKINSON OR 10 MILES SOUTHEAST OF
  NEW LEIPZIG... MOVING SOUTHEAST AT 35 MPH AND WILL REMAIN IN
  RURAL AREAS IN SOUTHERN GRANT COUNTY.


IF YOU ARE IN A CAR...GO IN A NEARBY STURDY BUILDING! AS A LAST
RESORT LIE FLAT IN A DITCH AND COVER YOUR HEAD.

VINING/HAMILTON

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 22, 5:48 PM MDT, 2 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  BISMARCK ND
648 PM CDT SAT AUG 22 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    13 E BEACH                ND   1.00 INCH HAIL
08/22/98   GOLDEN VALLEY

0635 PM    MEDORA                    ND   1.00 INCH HAIL
08/22/98   BILLINGS                       FROM MEDORA POLICE
                                          DEPARTMENT

0645 PM    5 S MEDORA                ND   1.00 INCH HAIL
08/22/98   BILLINGS                       FROM COUNTY EMERGENCY
                                          MANAGER

TWH
Local storm report, Aug 22, 5:48 PM MDT, 2 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  BISMARCK ND
648 PM CDT SAT AUG 22 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    13 E BEACH                ND   1.00 INCH HAIL
08/22/98   GOLDEN VALLEY

0635 PM    MEDORA                    ND   1.00 INCH HAIL
08/22/98   BILLINGS                       FROM MEDORA POLICE
                                          DEPARTMENT

0645 PM    5 S MEDORA                ND   1.00 INCH HAIL
08/22/98   BILLINGS                       FROM COUNTY EMERGENCY
                                          MANAGER

TWH
Local storm report, Aug 22, 7:43 PM MDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  BISMARCK ND
843 PM CDT SAT AUG 22 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0653 PM    3 S FRYBURG               ND   1.75 INCH HAIL
08/22/98   BILLINGS

0742 PM    18 S DICKINSON            ND   2.00 INCH HAIL
08/22/98   STARK                          WINDOWS BROKEN OUT OF
                                          FARM HOME

0655 PM    18 S GLADSTONE            ND   1.75 INCH HAIL
08/22/98   HETTINGER

FRANSEN
Local storm report, Aug 22, 7:43 PM MDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  BISMARCK ND
843 PM CDT SAT AUG 22 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0653 PM    3 S FRYBURG               ND   1.75 INCH HAIL
08/22/98   BILLINGS

0742 PM    18 S DICKINSON            ND   2.00 INCH HAIL
08/22/98   STARK                          WINDOWS BROKEN OUT OF
                                          FARM HOME

0655 PM    18 S GLADSTONE            ND   1.75 INCH HAIL
08/22/98   HETTINGER

FRANSEN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 6:50 PM MDTSevere Thunderstorm WarningBISHettinger60 min
Aug 22, 7:30 PM MDTSevere Thunderstorm WarningBISGrant60 min

Nearby

Tornado Warnings in North Dakota, 1998Every tornado warning in 1998Tornadoes 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.