Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 220, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2001, 3:26 AM CDT for Grand Forks County, Steele County, Traill County, North Dakota. It was in force for 34 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Jul 31, 2001, 3:26 AM CDT (08:26 UTC)
- Expired
- Jul 31, 2001, 4:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Grand Forks County, ND, Steele County, ND, Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 28 km from the middle of the area, began a volume at 08:27 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 31, 3:30 AM CDT | Thunderstorm Wind | Hope, ND | Trees were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 30, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 8.4 hours before the alert went out and 244 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
- 3783 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 954 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 3.6
- Supercell composite
- 14.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 310827 SVRFAR NDC035-091-097-310900- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 326 AM CDT TUE JUL 31 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... STEELE COUNTY IN SOUTHEAST NORTH DAKOTA AND NORTHWESTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 400 AM CDT. * AT 322 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 46 MILES SOUTHWEST OF GRAND FORKS TO 26 MILES NORTHEAST OF VALLEY CITY...MOVEMENT WAS TO THE NORTHEAST AT 45 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... SHERBROOKE AT 330 AM... GOLDEN LAKE AT 335 AM... CLIFFORD AT 340 AM AND HATTON AT 345 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM TUESDAY MORNING FOR EASTERN NORTH DAKOTA. LAT...LON 4765 9800 4725 9775 4739 9716 4793 9755 $$ 23 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 Jul 31, 2:40 AM CDT, 46 minutes earlier.
Area forecast discussion, Jul 31, 2:40 AM CDT, 46 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 240 AM CDT TUE JUL 31 2001 FCST CONCERNS TODAY...SVR POTENTIAL AND HVY RAIN THREAT. .SHORT TERM... CURRENT FRONT LOCATED ACROSS NW MN TO SE ND THEN TO WRN SD...NR A KROX-KGFK-KJMS-KMBG LINE. VERY HIGH DEW PTS ALONG AND AHD OF FRONT WITH 80 DEW PTS POOLING FROM FARGO TO WADENA/STAPLES. MCS MOVING INTO ERN ND EARLY THIS AM SHOULD CONTINUE TO TRACK NORTHEAST. RUC ANALYSIS AND VAD WIND PROFILES SHOW LOW LEVEL JET OF 40KTS OVER ERN SD INTO SE ND AND MN...WITH FAVORABLE LEFT QUAD OVER ERN ND WHICH SHOULD AID IN KEEPING ELEVATED CONVECTION GOING EARLY THIS MORNING. OBVIOUSLY...ATMOS VERY JUICED UP WITH HVY RAIN A GOOD BET WITH ANY STORMS THAT FORM TODAY AND THIS EVENING. PWATS FROM ETA/MESOETA 2 TO 2.5 INCHES. THUS WILL MAINTAIN FFA FOR ERN ND TODAY...BUT WILL ALTER TIMING FOR NW MN TO THIS AFTN/EVE AS BEST CONVECTION NOT EXPECTED IN ERN CWFA TIL LATE TODAY AND EARLY TONIGHT. COORD WITH MPX/DLH. SFC MAP SHOWS WK SFC LOWS OVER SE WYOMING AND OVER NCNTRL SD. BUT MODELS DO AGREE THAT STRONG SHORT WAVE MOVING THRU MT/ALBERTA WILL MOVE ENE AND HELP DEEPEN THE SFC LOW AS IT MOVES NORTHEAST INTO ERN ND THIS AFTN. FOCUS OF HVY RAIN SHOULD BE ALONG AND JUST NORTH OF FRONT THIS MORNING...BUT THEN FOCUS WILL SHIFT INTO MN THIS AFTN/EVENING AS LOW MOVES NORTHEAST AND DRAGS FRONT INTO VERY JUICED ENVIRONMENT. SVR THREAT MOSTLY THIS MORNING FOR ND...THEN VALLEY EAST INTO MN LATER THIS AFTN/EVENING AS COLD FRONT MOVES THROUGH. STRONG DRY PUNCH AT 70H MOVES INTO MN BY 06Z WHICH MAY ENHANCE SQUALL LINE POTENTIAL. AS FOR TEMPS/WIND...GUSTY SOUTH WINDS AHD OF DEEPENING LOW IN WCNTRL MN A GOOD BET SO WILL GO 20-30 MPH AND GUSTY IN ZFP THIS AFTN. TEMPS WILL APPROACH 90 IN THAT AREA AS WELL...AND WITH HIGH DEW PTS THIS WILL APPROACH HEAT ADVISORY CONDITIONS. ATTM WILL NOT HEADLINE FOR HEAT OR WIND ADVISORIES IN WCNTRL MN AS WANT TO FOCUS ON HVY RAIN THREAT THIS AFTN/EVE. .LONGER TERM... SYSTEM TO MOVE EAST TONIGHT WITH CONVECTION EXITING MN CWFA AFTER 06Z. THEN RELIEF WILL COME IN LATE TONIGHT AND WEDNESDAY AS LOWER DEW PTS OVERSPREAD THE AREA. WITH SRN END OF 50H TROUGH SWINGING ALONG INTERNATIONAL BORDER COULD BE SOME INSTABILITY SHOWERS FAR NE ND AND NW MN. ATTM WILL KEEP IT DRY AND LET LATER SHIFTS EVAULATE THIS. .EXTENDED... NO CHANGES TO EXTENDED. 50H RIDGE RE-BUILDS IN MN THIS WEEEKEND SETTING THE STAGE FOR A RETURN TO WARMER AND HUMID WEATHER THIS WEEKEND. POTENTIAL FOR SOME TSRA AS WELL ESPLY SUNDAY AS FRONT TRIES TO ADVANCE EAST. .FGF...FLASH FLOOD WATCH EASTERN NORTH DAKOTA AND THE RED RIVER VALLEY TODAY AND NORTHWEST AND WEST CENTRAL MINNESOTA THIS AFTERNOON AND EVENING. RIDDLE
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:37 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Griggs, Steele | 23 min |
| Jul 31, 10:14 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele | 46 min |
| Jul 31, 10:29 AM CDT | Flash Flood Warning | FGF | Grand Forks, Griggs, Steele | 3 hr |
| Jul 31, 10:52 AM CDT | Severe Thunderstorm Warning | FGF | Traill | 38 min |
| Jul 31, 10:59 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele | 46 min |
| Jul 31, 4:39 PM CDT | Flash Flood Warning | FGF | Grand Forks | 4 hr |
| Jul 31, 4:41 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 49 min |
| Jul 31, 4:54 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 51 min |
| Jul 31, 4:58 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 32 min |
| Jul 31, 6:13 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 32 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.