Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 218, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 16, 1997, 1:28 AM CDT for Benson County, Eddy County, North Dakota. It was in force for 47 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 16, 1997, 1:28 AM CDT (06:28 UTC)
- Expired
- Sep 16, 1997, 2:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Benson County, ND, Eddy County, ND
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 15, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 6.5 hours before the alert went out and 172 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
- 353 J/kg
- Mixed-layer CIN
- -297 J/kg
- Mixed-layer LCL
- 1197 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 160627 RRA SVRFAR NDC005-027-160715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 128 AM CDT TUE SEP 16 1997 THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST NORTH DAKOTA ...BENSON COUNTY...WESTERN EDDY COUNTY AT 125 AM A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM FILMORE TO JUST SOUTH OF SHEYENNE...OR 45 MILES WEST TO 20 MILES SOUTHWEST OF DEVILS LAKE. THE STORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR. TOWNS IN THE PATH OF THIS LINE OF STORMS INCLUDE BAKER...HARLOW AND OBERON. REMEMBERZ SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. EWENS
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 15, 9:00 PM CDT, 4 hours 28 minutes earlier.
Area forecast discussion, Sep 15, 9:00 PM CDT, 4 hours 28 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 900 PM CDT MON SEP 15 1997 FCST CHALLENGE FOR RMDR OF TONIGHT CONTS TO BE TSTM DVLPMNT/SVR POTENTIAL. LATEST SFC ANAL SHOWS LO IN ERN MT VCNTY GGW...WITH WRM FNT XTNDG SE FM LOW...THEN ACRS CNTRL SD. WV SAT LOOP SHOWS GOOD SW-NE ALIGNED JET MOVG INTO SWRN WY WITH NGM...ETA...AND 21Z RUC ALL PICKING UP THIS FEATURE. ALTHO MODELS DIFFER SOMEWHAT IN RESOLVING THE SPECIFICS...THEY ALL SHOW THIS JET CRASHING INTO RIDGE OVR NXT 12 HRS...WITH H5 RIDGE AXIS PROPOGATING QUICKLY TO EAST DURG PD. MODELS SHOW STG UPPER LVL DIVGERGENCE ASSTD WITH JET MOVG INTO NCNTRL ND BY 06Z...THEN SPRDG E-SE OVR RED RIVER VALLEY BY 12Z. GIVEN THIS SCENARIO...FEEL CURRENT ZONES HAVE GOOD HANDLE ON TIMING. AS FAR AS SEVERE GOES...QUICK LOOK AT 00Z SOUNDINGS FM BIS AND ABR AS WELL AS LOOKING AT 12Z GRIDDED DATA...CAN SEE NO REASON TO DROP MENTION OF SVR. WL ALSO LOOK AT POSSIBILITY OF EXTNDG MENTION OF SVR INTO WESTERNMOST SLICE OF NW MN COUNTIES SINCE IF MCS DVLPS FEEL IT WILL CONT INTO THIS AREA BEFORE END OF FIRST PD. FOR TEMPS...ACRS MN CWA WL DROP TEMPS VCNTY BDE A NOTCH AS SINCE WARM AIR STILL OFF TO SOUTH. CONVERSELY... MAY ALSO BUMP UP DTL/FFM A BIT. ONLY MINOR TWEAKS FOR ND SIDE ON UPDATE. STRAGER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 1:19 AM CDT | Severe Thunderstorm Warning | FGF | Barnes | 41 min |
| Sep 16, 1:41 AM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 49 min |
| Sep 16, 2:00 AM CDT | Severe Thunderstorm Warning | FGF | Barnes | 30 min |
| Sep 16, 3:29 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele | 31 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1997Every severe thunderstorm warning in 1997
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.