Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 91, NWS Bismarck, ND

July 7, 2000Sheridan County, Wells County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 7, 2000, 5:18 AM CDT for Sheridan County, Wells County, North Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 7, 2000, 5:18 AM CDT (10:18 UTC)
Expired: Jul 7, 2000, 6:00 AM CDT
In force: 42 min
Issued by: NWS Bismarck, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Sheridan County, ND, Wells County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 10.3 hours before the alert went out and 112 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: 2179 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1212 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 409 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 29.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KBIS 071019
SVRBIS
NDC083-103-071100-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
518 AM CDT FRI JUL 7 2000

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN SHERIDAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA
  NORTHWESTERN WELLS COUNTY IN SOUTH CENTRAL NORTH DAKOTA

* UNTIL 600 AM CDT

* AT 518 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 20 MILES WEST OF HARVEY...OR ABOUT 56 MILES
  SOUTHEAST OF MINOT...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARVEY AT 545 AM CDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

LAT...LON 4779 10071 4766 10052 4763 9977 4784 9981
.END
18

What forecasters said that day

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

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 3:15 AM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jul 7, 3:15 AM CDT, 2 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
315 AM CDT FRI JUL 7 2000

STRONG THUNDERSTORMS DEVELOPED EARLY THIS MORNING JUST EAST OF A
SURFACE TROF IN NORTH CENTRAL ND. LESS INTENSE STORMS ARE DEVELOPING
BEHIND THE TROF. EXPECT STORMS TO DISSIPATE THIS MORNING SINCE AVN
SHOWS SLIGHT RIDGING IN THE SOUTHWEST FLOW. MODELS SHOW IMPULSES
IN THE FLOW LATE THIS AFTERNOON...SO WILL INTRODUCE TSTMS TO THE FORECAST
BY EVENING. FORECASTED INSTABILITIES AND SHEAR SUGGEST A FEW STORMS
MAY STILL BE SEVERE THIS EVENING. NEXT CHANCE OF TSTMS APPEARS TO BE
DURING MAX HEATING SATURDAY WHEN SURFACE LOW OVER SD BECOMES MORE
ORGANIZED AND FLOW ALOFT SHOWS SOME CYCLONIC CURVATURE.|

.BIS...NONE.

LM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 7:34 PM CDT	Tornado Warning	BIS	Hettinger	41 min
Jul 6, 7:45 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie	60 min
Jul 6, 8:01 PM CDT	Severe Thunderstorm Warning	BIS	Williams	64 min
Jul 6, 8:21 PM CDT	Severe Thunderstorm Warning	BIS	Hettinger	24 min
Jul 7, 4:17 AM CDT	Severe Thunderstorm Warning	BIS	McLean	43 min
Jul 7, 5:58 AM CDT	Severe Thunderstorm Warning	BIS	Wells	47 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2000 Every severe thunderstorm warning in 2000

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.