Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 244, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 25, 1998, 10:03 PM CDT for Ransom County, North Dakota. It was in force for 32 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
- Sep 25, 1998, 10:03 PM CDT (03:03 UTC)
- Expired
- Sep 25, 1998, 10:35 PM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Ransom County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 122 km from the middle of the area, began a volume at 03:04 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 00:00Z, 3.1 hours before the alert went out and 182 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2176 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 415 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
557 WUUS1 KFAR 260304 RRA SVRFAR NDC073-260335- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1003 PM CDT FRI SEP 25 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN RANSOM COUNTY IN SOUTHEASTERN NORTH DAKOTA * UNTIL 1035 PM CDT * AT 10 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES NORTHEAST OF LISBON OR 40 MILES SOUTHEAST OF VALLEY CITY. THE STORM WILL BE MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL ... PASS SOUTH OF ANSLEM BY 1015 PM THIS IS A DANGEROUS STORM. LARGE HAIL WAS REPORTED IN LISBON AROUND 945 PM. DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. KENNEDY &
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 25, 8:10 PM CDT, 1 hour 53 minutes earlier.
Area forecast discussion, Sep 25, 8:10 PM CDT, 1 hour 53 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 810 PM CDT FRI SEP 25 1998 FCST CHALLENGE TONIGHT...SHOWERS. 21Z RUC AND EARLIER MODELS SHOWED WIDESPREAD 850MB WARM ADVECTION TAKING PLACE THIS EVENING. 850 THETA-E ADVECTION ALSO IMPRESSIVE...WITH THIS AREA SLIDING NORTHEAST INTO MN OVERNIGHT. CURRENT 88D SHOWS MAIN BAND OF PCPN FROM SOUTH OF DVL EAST TO NR BJI... MOVING NORTHEAST AT ABOUT 30KT. SOME LIGHTNING STRIKES FROM TIME TO TIME AS MID LEVEL LAPSE RATES ARE MARGINALLY SUPORTIVE OF THUNDER. 12Z MODELS DID NOT INDICATE CURRENT PCPN PATTERN WELL...BUT SHOWED GENERAL FLOW AND 850 WARM ADVECTION OK. BASED ON CURRENT SATELLITE AND LATEST RUC EXPECT SHOWERS TO CONTINUE TO MOVE NORTHEAST AND GRADUALLY END OVERNIGHT. WILL NEED TO UPDATE DVL ZONE AS NO PCPN IS CURRENTLY IN FCST. 88D SHOWS PCPN KNOCKING ON BENSON COUNTY DOORSTEP SO WILL UPDATE TO ADD SCAT SHRA/TSRA TONIGHT. WILL HAVE SCT SHRA/TSRA REST OF CWFA TONIGHT. WILL CHECK OVER LOW TEMP FCST...BUT ATTM THEY APPEAR OK. WILL SEND UPDATE OUT BY 820 PM. RIDDLE
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 9:27 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 33 min |
| Sep 25, 10:18 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 32 min |
| Sep 25, 10:30 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 30 min |
| Sep 25, 10:37 PM CDT | Tornado Warning | FGF | Richland | 33 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1998Every severe thunderstorm warning 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.