Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 293, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 14, 2001, 2:18 PM CDT for Cavalier County, Towner County, North Dakota. It was in force for 42 min. 2 reports 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
- Aug 14, 2001, 2:18 PM CDT (19:18 UTC)
- Expired
- Aug 14, 2001, 3:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Cavalier County, ND, Towner County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 14, 2:20 PM CDT | Hail 0.75 | Hansboro, ND | |
| Aug 14, 2:48 PM CDT | Hail 0.75 | Sarles, ND |
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, 7.3 hours before the alert went out and 266 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
- 944 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1363 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
155 WUUS53 KFGF 141918 SVRFAR NDC019-095-142000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 218 PM CDT TUE AUG 14 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA AND NORTHERN TOWNER COUNTY IN NORTHEAST NORTH DAKOTA. * UNTIL 300 PM CDT. * AT 212 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES EAST OF HANSBORO...OR ABOUT 44 MILES WEST OF LANGDON...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SARLES AT 245 PM... CALVIN AT 255 PM AND CLYDE AT 300 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM TUESDAY EVENING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4904 9936 4886 9943 4869 9874 4893 9863 $$ 55 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 Aug 14, 2:05 PM CDT, 13 minutes earlier.
Area forecast discussion, Aug 14, 2:05 PM CDT, 13 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 205 PM CDT TUE AUG 14 2001 AFTER FURTHER DISCUSSION...WILL GO WITH FLASH FLOOD WATCH INSTEAD OF FLOOD WATCH AS PREV DISCUSSED IN COORD CALLS. -------------------------- PREV AFD... PCPN CHANCES HIGHLIGHT CHALLENGES THIS FCST. AFTER INTER-OFFICE COORDINATION AND COORD WITH DLH/BIS WILL ISSUE FLASH FLOOD WATCH FOR FAR NE ND AND NW MN (GFK-BJI AND POINTS NORTH) FOR TONIGHT. .CURRENT... 18Z SFC MAP SHOWS LOW NORTH OF WINNIPEG WITH TROUGH SOUTHWEST TO NORTH OF MINOT TO ANOTHER WK LOW IN WCNTRL ND. TSRA CONTINUES TO DEVELOP ALONG THIS BOUNDARY AND MOVE EAST...MAINLY ACROSS SRN MB. COLD FRONT LOCATED A BIT FARTHER NORTHWEST AND BEGINNING TO CATCH UP TO BOUNDARY NORTH OF MINOT AND CAUSING INCREASED CONVECTION ON KMBX RADAR. 00Z ETA GFK SOUNDING SHOWS FREEZING LEVEL AT 12.6 KFT. 12Z MODELS ARE IN FAIR AGREEMENT...AND LOOK AT UCAR MM5 AND WRF SUPPORTS THEIR SOLNS OF BRINGING HEAVIEST PCPN DEVELOPING IN FAR NE ND LATE THIS AFTN AND THEN OVER NW MN BTWN 00-06Z. .SHORT TERM... FRONT TO SAG SOUTHEAST ACROSS CWFA TONIGHT...REACHING FAR SE CWFA NR 12Z. EXPECT CONVECTION ALONG FRONT TONIGHT...ENDING NW ZONES BEFORE MIDNIGHT. HEAVIEST RAIN POTENTIAL PER DAY1 QPF AND MODEL QPF FROM GFK-TVF-BJI-BDE ZONES...WHERE THEY HAVE HAD THE MOST RAINS THIS SUMMER. AFTER COORD WILL ISSUE AN FFA FOR TONIGHT FOR THAT AREA AS THAT AREA STANDS THE BEST CHC OF WIDESPREAD 1+ INCH AMOUNTS. SVR POTENTIAL ALSO GOOD LATE THIS AFTN/EVE. MSAS LI TO -10 IN CNTRL ND WITH THETA E CONVERGENCE CONTINUING ALONG BOUNDARY TO OUR NORTHWEST. GOOD SHEAR PROFILE AS WELL S-SW WINDS SFC-85H AND W-NW AT 70H SO SUPERCELLS PSBL. .LONGER TERM... OVERNIGHT CONVECTION TO BE EXITING CWFA EARLY WED AM...THEN 50H TROUGH TO DROP SOUTH THROUGH THE AREA 18-00Z WITH 50H TEMPS TO -16C. ETA SOUNDINGS SHOW CONVECTIVE TEMPS NR 70...WHICH WILL BE REACHED. THUS WILL MAINTAIN POPS FOR TSRA WEDNESDAY PER CURRENT ZONES. TROUGH WILL PASS OUT OF AREA WED EVENING FOLLOWED BY HIGH PRESSURE ON THURSDAY. .EXTENDED...MODELS IN DECENT AGREEMENT THRU DAY 4 AND THEN SLOWLY DIVERGE AFTER THEN. MRF SHOWING CONTINUITY WITH PREVIOUS RUN UNTIL DAY 6 WITH LATEST RUNS DEPICTING A LESS AMPLIFIED PATTERN OVER THE NRN TIER OF THE U.S. BY THEN. 5H LOW OVER THE NE PACIFIC MOVES ENE INTO WRN CANADA AS TROF DROPS INTO THE ERN U.S. DAY 3 THRU 5. 5H RDG MOVES E INTO THE NRN PLAINS BRINGING DRY AND MILD CONDITIONS FOR THE WEEKEND. CHC FOR PCPN FRI INITIAL TROF PASSAGE AND AGAIN ON MON AS SECOND SHRT WV MOVES THRU IN NEARLY ZONAL FLOW. BEST CHC FOR PCPN TO BE OVER THE NE ZONES FRI AND WL BREAK UP EXTENDED TO REFLECT THIS. NEAR NORMAL LOWS AND BLO NORMAL HIGHS TO PREVAIL THRU THE EXTENDED. .FGF...FLASH FLOOD WATCH TONIGHT FOR EXTREME NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA...FOR AREAS ALONG AND NORTH OF A GRAND FORKS TO BEMIDJI LINE. DR/RT
In the hours before
Special weather statement, Aug 14, 9:21 AM CDT, 4 hours 57 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-142045- SPECIAL WEATHER STATEMENT...CORRECTION HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 900 AM TUE AUG 2001 CORRECTION...SOUTH OF I-29 SHOULD BE SOUTH OF I-94 ...CHANCE OF SEVERE THUNDERSTORMS ACROSS PARTS OF EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA LATE THIS AFTERNOON AND EVENING... SYNOPSIS...A LOW PRESSURE SYSTEM WILL BE MOVING EAST ACROSS SOUTHERN NORTH DAKOTA AS A COLD FRONT MOVES SOUTHEAST ACROSS THE REGION. WITH MOIST AND UNSTABLE AIR IN PLACE THIS FRONT WILL BE THE FOCUS FOR THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON CONTINUING INTO THE EVENING HOURS. AREA OF CONCERN...A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA. BETTER CHANCES FOR SEVERE THUNDERSTORM DEVELOPMENT WILL BE OVER SOUTHEAST NORTH DAKOTA AND WEST CENTRAL MINNESOTA SOUTH OF I-94. TIME...START AFTER 1 PM AND SHOULD MOVE OUT OF THE AREA BY MIDNIGHT. TYPE OF HAZARD...MAINLY DAMAGING WIND AND LARGE HAIL. KENNEDY
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 2:59 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 46 min |
| Aug 14, 3:40 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 35 min |
| Aug 14, 3:45 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 45 min |
| Aug 14, 4:07 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 38 min |
| Aug 14, 4:28 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 47 min |
| Aug 14, 4:53 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 37 min |
| Aug 14, 5:15 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 45 min |
| Aug 14, 6:40 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 50 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.