Alert archive / North Dakota / Tornado Warnings in 1991

Tornado Warning 3, NWS Bismarck, ND

May 30, 1991Ramsey County, Towner County, North Dakota

NWS Bismarck, ND issued this tornado warning at May 30, 1991, 10:43 PM CDT for Ramsey County, Towner County, North Dakota. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
May 30, 1991, 10:43 PM CDT (03:43 UTC)
Expired
May 30, 1991, 11:30 PM CDT
In force
47 min
Issued by
NWS Bismarck, ND
Area
Whole counties

Counties Ramsey County, ND, Towner County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.7 hours before the alert went out and 229 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 1991-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 470 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 00:00Z on 1991-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
470 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1822 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBIS 310343
TORBIS
NDC095-071-310430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE BISMARCK ND
1043 PM CDT THU MAY 30 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF NORTH DAKOTA
      SOUTHERN TOWNER...NORTHERN RAMSEY

AT 1033 PM CDT A POLICEMAN REPORTED A TORNADO ON THE GROUND
15 MILES  NORTH OF CANDO...OR 40 MILES NORTHWEST OF DEVILS LAKE.
THE TORNADO WAS  MOVING SOUTHEAST. CANDO AND STARKWEATHER ARE
INCLUDED IN THE WARNING.

IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER
IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR...STAY AWAY FROM WINDOWS.  ABANDON CARS AND MOBILE HOMES.

 MANTHE

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

Special weather statement, May 30, 5:10 PM CDT, 5 hours 33 minutes before
NDZ003-004-006-007-008-302200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
410 PM MDT THU MAY 30 1991

...STRONG THUNDERSTORMS IN SOUTHWEST NORTH DAKOTA...

AT 400 PM MDT...RADARS SHOWED THUNDERSTORMS MOVING OUT OF
SOUTH DAKOTA INTO THE SOUTHWEST TIP OF NORTH DAKOTA. ONE STORM
WAS RATHER STRONG AND LIKELY CONTAINED BRIEF HEAVY RAIN. THIS
STORM WAS LOCATED ABOUT 12 MILES EAST OF BOWMAN AND MOVING NORTH
AT 15 MPH.

ELSEWHERE...ANOTHER STORM WAS DETECTED ABOUT 60 MILES SOUTHWEST OF
BISMARCK NEAR THE TOWN OF NEW LEIPZIG. THIS STORM WAS ALSO QUITE STRONG
AND COULD HAVE CONTAINED SMALL HAIL. THIS STORM WAS ALSO MOVING
NORTH AT 15 MPH.

LM
Special weather statement, May 30, 6:33 PM CDT, 4 hours 10 minutes before
NDZ001-302145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
625 PM CDT THU MAY 30 1991

...THUNDERSTORMS DEVLOPING IN WESTERN NORTH DAKOTA...

AT 625 PM CDT...WEATHER RADAR WAS INDICATING A STRONG THUNDERSTORM
50 MILES EAST/SOUTHEAST OF WILISTON OVER LAKE SAKAKWEA...OR 10 MILES
SOUTHWEST OF NEWTOWN NORTH DAKOTA.  THIS STORM IS CAPABLE OF DEADLY
LIGHTNING...BRIEF HEAVY RAIN AND POSSIBLY SMALL HAIL.  MOVEMENT IS
TO THE NORTH AT 2b0 MPH.

OTHER SHOWERS AND THUNDERSHOWERS WERE LOCATED JUST SOUTH OF THIS STORM
AND EXTENDED SOUTH THROUGH DICKINSON AND WERE ALSO MOVING TO THE NORTH.

IF THUNDERSTORMS APROACH YOUR AREA MOVE TO SAFE SHELTER INDOORS.

TS
Special weather statement, May 30, 7:08 PM CDT, 3 hours 35 minutes before
NDZ003-004-006-007-008-310100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
708 PM CDT THU MAY 30 1991

...THUNDERSTORMS IN CENTRAL AND SOUTHWEST NORTH DAKOTA...

AT 700 PM CDT...BISMARCK RADAR SHOWED A LARGE AREA OF SCATTERED
SHOWERS AND THUNDERSTORMS FROM DICKINSON TO THE EAST END OF LAKE
SAKAKAWEA TO BISMARCK TO LEMMON SOUTH DAKOTA TO DICKINSON.

TWO STRONG STORMS WERE LOCATED 40 MILES AND 60 MILES SOUTHWEST OF
BISMARCK...OR NEAR THE EAST AND WEST ENDS OF LAKE TSCHIDA. THESE STORMS
CONTAINED HEAVY RAIN AND POSSIBLE HAIL. THEY WERE MOVING VERY SLOW
TO THE NORTH.

IN THE SOUTHWEST TIP OF THE STATE...THUNDERSTORMS WERE WEAKENING AS THEY
MOVED FROM SOUTH DAKOTA INTO BOWMAN COUNTY JUST EAST OF THE CITY OF
BOWMAN.
<
LM
Special weather statement, May 30, 8:29 PM CDT, 2 hours 14 minutes before
NDZ003-004-005-006-007-008-009-010-310200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
820 PM CDT THU MAY 30 1991

...THUNDERSTORMS IN CENTRAL AND SOUTHWEST NORTH DAKOTA...

AT 810 PM CDT...BISMARCK RADAR SHOWED A BAND OF SHOWERS AND
THUNDERSTORMS ABOUT 50 MILES WIDE EXTENDING FROM 20 MILES EAST OF
BOTTINEAU TO THE EAST END OF LAKE SAKAKAWEA TO 50 MILES WEST OF
BISMARCK TO 65 MILES SOUTH OF DICKINSON.

THERE WERE A FEW VERY STRONG STORMS IN THIS BAND. ONE WAS LOCATED
50 MILES WEST OF BISMARCK NEAR GLEN ULLIN. THIS STORM HAD VERY HEAVY
RAIN AND POSSIBLE HAIL.

THE SECOND STRONG STORM WAS 65 MILES NORTHWEST OF BISMARCK NEAR
GARRISON DAM...AND THE THIRD STRONG STORM WAS LOCATED ABOUT 45 MILES
SOUTH OF MINOT. ALL OF THESE STORMS WERE MOVING NORTH AT 15 MPH.
>
LM
Special weather statement, May 30, 10:05 PM CDT, 38 minutes before
NDZ003-004-005-006-007-008-009-010-310400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1005 PM CDT THU MAY 30 1991

...THUNDERSTORMS IN WESTERN NORTH DAKOTA...

AT 1005 PM CDT...BISMARCK RADAR SHOWED A BROAD BAND OF SHOWERS AND
THUNDERSTORMS. IT WAS 50 MILES WIDE AND THE CENTER OF THE BAND EXTENDED
FROM MINOT TO 30 MILES WEST OF BISMARCK TO 70 MILES SOUTHEAST OF
DICKINSON.

THERE WERE A FEW VERY STRONG STORMS IN THIS BAND JUST WEST OF THE
BISMARCK/MANDAN AREA. ONE WAS 35 MILES NORTHWEST OF BISMARCK OR 10
MILES SOUTH OF CENTER. THE SECOND WAS 25 MILES WEST OF BISMARCK NEAR
ALMONT...AND THE THIRD WAS 35 MILES SOUTHWEST OF BISMARCK OR 5 MILES
NORTHWEST OF CARSON. THESE STORMS CONTAINED HEAVY RAIN AND POSSIBLE
HAIL. THEY WERE MOVING NORTHEAST AT 20 MPH.

LM

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 12:45 AM CDTTornado WarningBISBurleigh25 min

Nearby

Tornado Warnings in North Dakota, 1991Every tornado warning in 1991Tornadoes in 1991

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.