Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 228, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2001, 10:14 AM CDT for Grand Forks County, Steele County, North Dakota. It was in force for 46 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, 10:14 AM CDT (15:14 UTC)
- Expired
- Jul 31, 2001, 11:00 AM CDT
- In force
- 46 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
The radar
The Fargo/Grand Forks radar (KMVX), 39 km from the middle of the area, began a volume at 15:16 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, 11:00 AM CDT | Thunderstorm Wind | Finley, ND | Branches 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 3.2 hours before the alert went out and 249 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
- 381 J/kg
- Mixed-layer CIN
- -626 J/kg
- Mixed-layer LCL
- 1544 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 311515 SVRFAR NDC035-091-311600- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1014 AM CDT TUE JUL 31 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA AND STEELE COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 1100 AM CDT. * AT 1011 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTH OF LOGAN CENTER...OR ABOUT 37 MILES WEST OF GRAND FORKS...MOVEMENT WAS TO THE NORTHEAST AT 50 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LOGAN CENTER AT 1015 AM CDT... KEMPTON AT 1020 AM CDT AND LARIMORE AT 1030 AM CDT. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4793 9786 4736 9783 4740 9755 4810 9755 $$ 04 g 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, 7 hours 34 minutes earlier.
Area forecast discussion, Jul 31, 2:40 AM CDT, 7 hours 34 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
In the hours before
Local storm report, Jul 31, 6:05 AM CDT, 4 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
605 AM CDT TUE JUL 31 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0240 AM VALLEY CITY ND WIND DAMAGE
07/31/01 BARNES TREES DOWN
0357 AM HALSTAD MN 67 MPH TSTM GUST
07/31/01 NORMAN
0417 AM HAWLEY MN .88 INCH HAIL
07/31/01 CLAY
0425 AM CROOKSTON MN WIND DAMAGE
07/31/01 POLK 4-5 INCH DIAMETER LIMBS
DOWN
0425 AM GENTILLY MN WIND DAMAGE
07/31/01 POLK 4-5 INCH DIAMETER LIMBS
DOWNSpecial weather statement, Jul 31, 6:47 AM CDT, 3 hours 27 minutes before
MNZ001>009-013>017-022>024-027-028-311250- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 647 AM CDT TUE JUL 31 2001 ...SEVERE THUNDERSTORM WATCH NUMBER 645 FOR NORTHWEST MINNESOTA HAS BEEN CANCELLED.... THE SEVERE THUNDERSTORMS HAVE MOVED OUT OF NORTHWEST MINNESOTA AND HAVE WEAKENED. THUS THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 8 AM CDT FOR BELTRAMI...LAKE OF THE WOODS...ROSEAU... KITTSON...MARSHALL...PENNINGTON...RED LAKE...POLK...HUBBARD... CLEARWATER...NORMAN...MAHNOMEN...BECKER AND CLAY COUNTIES HAS BEEN CANCELLED. RIDDLE
Special weather statement, Jul 31, 6:59 AM CDT, 3 hours 15 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-311455- SPECIAL WEATHER STATEMENT HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 659 AM CDT TUE JUL 31 2001 ...SCATTERED SEVERE THUNDERSTORMS EXPECTED LATE THIS AFTERNOON AND EVENING FROM THE RED RIVER VALLEY EAST INTO MINNESOTA... SYNOPSIS...LOW PRESSURE WILL MOVE NORTHEAST INTO EASTERN NORTH DAKOTA AND STRENGTHEN THIS AFTERNOON. THE LOW WILL THEN MOVE INTO MANITOBA THIS EVENING WITH A COLD FRONT MOVING EAST INTO MINNESOTA. THE ATMOSPHERE OVER EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA IS VERY UNSTABLE AND VERY MOIST. AS THE LOW AND FRONT INTERACT WITH THIS AIRMASS LATER TODAY AND EARLY EVENING THUNDERSTORMS ARE EXPECTED TO RE-DEVELOP WITH SOME SEVERE THUNDERSTORMS LIKELY. AREA OF CONCERN...THERE IS A SLIGHT RISK OF SEVERE WEATHER EAST OF A PEMBINA TO LAKOTA TO VALLEY CITY NORTH DAKOTA LINE...THEN EAST TO INCLUDE ALL THE RED RIVER VALLEY AND NORTHWEST AND WEST CENTRAL MINNESOTA. TIME...BETWEEN 3 PM AND MIDNIGHT CDT. TYPE OF HAZARD...HEAVY RAIN...STRONG WINDS...AND LARGE HAIL. 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, 3:26 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele, Traill | 34 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.