Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 254, NWS Grand Forks, ND

September 2, 2000Sargent County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 2, 2000, 1:45 PM CDT for Sargent 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Sep 2, 2000, 1:45 PM CDT (18:45 UTC)
Expired
Sep 2, 2000, 2:15 PM CDT
In force
30 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Sargent County, ND

The radar

The Aberdeen radar (KABR), 97 km from the middle of the area, began a volume at 18:47 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

Aberdeen, SD (KABR), launched 12:00Z, 6.8 hours before the alert went out and 154 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, Aberdeen, SD at 12:00Z on 2000-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Aberdeen, SD at 12:00Z on 2000-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
516 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 021845
SVRFAR
NDC081-021915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
145 PM CDT SAT SEP 2 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 215 PM CDT

* AT 141 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTH OF STIRUM...OR ABOUT 48 MILES
  SOUTH OF VALLEY CITY...MOVEMENT WAS TO THE NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF
  EXTREME NORTHERN SARGENT COUNTY...
  NORTHERN SARGENT COUNTY...
  EXTREME NORTHERN SARGENT COUNTY

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

LAT...LON 4626 9797 4613 9779 4627 9758 4626 9797

NNNN

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 Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 2, 10:05 AM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Sep 2, 10:05 AM CDT, 3 hours 40 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1005 AM CDT SAT SEP 2 2000

FORECAST PROBLEM FOR TODAY IS PCPN. LATEST VIS AND IR SATELLITE
IMAGERY SHOWS CWFA COVERED IN IFR DECK WITH COLDEST CLOUD TOPS
WORKING INTO E ND. LATEST MSAS SFC PRESSURE ANALYSIS HAS LOW
PRESSURE CENTERED IN SE MT WITH TROF EXTENDING THROUGH W SD TO
ANOTHER LOW IN CENTRAL NE. CWFA IS IN MOIST E-SE FLOW. 12Z 850MB UA
MAP SHOWS WARM FRONT EXTENDING THROUGH SE ND INTO WC MN...
COINCIDENTAL TO WHERE CURRENTLY HAVE STRONGEST CONVECTION. WITH REST
OF CWFA GETTING GENERAL SHRA/TSRA DUE TO WAA. WHEN COMPARING MSAS
PRESSURE ANALYSIS TO MODELS...ETA MATCHES BEST WITH AVN ALSO CLOSE.
MODELS KEEP PCPN OVER CWFA AS SHORTWAVE MOVES THROUGH...WITH BEST
POTENTIAL FOR STRONGER STORMS STILL IN S CWFA. ALL IN ALL...CURRENT
FORECAST HANDLING SITUATION WELL...WITH ONLY MINOR CHANGES NEEvDED.

.FGF...NONE

NG

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 11:29 AM CDTSevere Thunderstorm WarningFGFBarnes, Cass31 min
Sep 2, 11:56 AM CDTSevere Thunderstorm WarningFGFCass34 min
Sep 2, 12:21 PM CDTSevere Thunderstorm WarningFGFRansom29 min
Sep 2, 12:43 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass32 min
Sep 2, 1:40 PM CDTSevere Thunderstorm WarningFGFRansom30 min
Sep 2, 2:18 PM CDTSevere Thunderstorm WarningFGFRansom, Richland32 min
Sep 2, 2:43 PM CDTSevere Thunderstorm WarningFGFCass32 min
Sep 2, 3:28 PM CDTSevere Thunderstorm WarningFGFRansom32 min
Sep 2, 3:33 PM CDTSevere Thunderstorm WarningFGFSargent32 min
Sep 2, 3:58 PM CDTSevere Thunderstorm WarningFGFRansom32 min
Sep 2, 4:32 PM CDTSevere Thunderstorm WarningFGFRansom, Richland28 min
Sep 2, 4:44 PM CDTFlash Flood WarningFGFCass, Ransom, Richland4 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2000Every 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; radar from the NEXRAD Level II archive.