Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 175, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 19, 2001, 6:02 AM CDT for Cass County, North Dakota. It was in force for 28 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
- Jul 19, 2001, 6:02 AM CDT (11:02 UTC)
- Expired
- Jul 19, 2001, 6:30 AM CDT
- In force
- 28 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Cass County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 66 km from the middle of the area, began a volume at 11:05 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 19, 3:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 11.0 hours before the alert went out and 243 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
- 4034 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1645 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
296 WUUS53 KFGF 191102 SVRFAR NDC017-191130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 602 AM CDT THU JUL 19 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA. INCLUDING THE CITY OF FARGO... * UNTIL 630 AM CDT. * AT 600 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTHEAST OF MAPLETON...OR ABOUT 8 MILES WEST OF FARGO...MOVEMENT WAS TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HORACE AT 605 AM CDT... WEST FARGO AT 610 AM CDT AND OXBOW AT 615 AM CDT. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT THURSDAY MORNING FOR NORTHWESTERN MINNESOTA AND SOUTHEAST NORTH DAKOTA. $$ 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 19, 3:25 AM CDT, 2 hours 37 minutes earlier.
Area forecast discussion, Jul 19, 3:25 AM CDT, 2 hours 37 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 325 AM CDT THU JUL 19 2001 FORECAST CONCERN CONTINUES TO BE CONVECTION LITTLE OVERALL CHANGE IN PATTERN EXPECTED ACROSS FORECAST AREA. ONGOING CONVECTION AHEAD OF SW/NE BOUNDARY THROUGH EASTERN NORTH DAKOTA WILL CONTINUE TO BE MONITORED FOR AM MENTION. IN ADDITION CONVECTIVE CLUSTER ALONG CENTRAL ND/SD BORDER WILL ALSO BE A CONCERN. FOR TODAY WK SFC HIGH TO SHIFT OVER FORECAST AREA HOWEVER WILL PROVIDE LITTLE PROTECTION FROM CONVECTIVE DEVELOPENT. CURRENT BOUNDARY TO MOVE LITTLE BEING ORIENTED PARALLEL TO FLOW AND ADDITIONAL BOUNDARIES AS A RESULT OF CURRENT CONVECTION TO LIKELY BE FOCUS FOR ADDITIONAL CONVECTIVE DEVELOPMENT AND S/W EVIDENT ON WV OVR IDAHO LIFTS NORTHEAST LATE IN DAY. ALSO WITH FAVORABLE LOW LEVEL CONVERGENCE OVR NW SD AND ENTRANCE REGION OF UPPER JET COULD SEE ROUND OF LATE NIGHT TSRA ORIGINATING FROM THIS AREA. WILL NOT GET INTO DETAILS HOWEVER AIRMASS CONTINUES TO BE VERY MOIST AND UNSTABLE FAVORING DEEP CONVECTION. ATTM FAVOR SOUTHERN HALF OF FA FOR FAVORABLE LOCATION OF STRONGEST CONVECTION BASED ON STRONGEST BOUNDARIES AND HIGH THETA-E AND THIS AREA MAY AGAIN SEE NEED FOR FLASH FLOOD WATCH. AT THIS TIME WILL HOLD OFF WITH UNCERTAINTY ON LATE NIGHT MCS. TEMPS STATUS-QUO WITH LITTLE CHANGE IN AIRMASS. WILL LIKELY CONFINE PCPN CHANCES FR'IDAY TO AM HOURS AS HIGH BUILDS IN DURING DAY ALONG WITH THETA-E RIDGE SHIFTING SOUTH AND LACK OF ANY SIG BOUNDARIES. .FGF...NONE. VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 7:00 PM CDT | Tornado Warning | FGF | Pembina | 45 min |
| Jul 18, 7:08 PM CDT | Flash Flood Warning | FGF | Pembina | 3 hr |
| Jul 18, 7:09 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 51 min |
| Jul 18, 7:09 PM CDT | Tornado Warning | FGF | Nelson | 51 min |
| Jul 18, 7:13 PM CDT | Tornado Warning | FGF | Walsh | 47 min |
| Jul 18, 7:15 PM CDT | Tornado Warning | FGF | Griggs, Steele | 45 min |
| Jul 18, 7:15 PM CDT | Tornado Warning | FGF | Grand Forks | 45 min |
| Jul 18, 7:17 PM CDT | Flash Flood Warning | FGF | Grand Forks, Nelson | 3 hr |
| Jul 18, 7:42 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 48 min |
| Jul 18, 7:55 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 50 min |
| Jul 18, 8:00 PM CDT | Tornado Warning | FGF | Griggs, Steele | 45 min |
| Jul 18, 8:46 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 59 min |
| Jul 18, 10:47 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 43 min |
| Jul 18, 11:28 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 47 min |
| Jul 18, 11:47 PM CDT | Tornado Warning | FGF | Grand Forks | 28 min |
| Jul 19, 12:04 AM CDT | Severe Thunderstorm Warning | FGF | Traill | 41 min |
| Jul 19, 12:14 AM CDT | Tornado Warning | FGF | Grand Forks | 31 min |
| Jul 19, 12:27 AM CDT | Flash Flood Warning | FGF | Grand Forks, Traill | 2 hr |
| Jul 19, 12:27 AM CDT | Tornado Warning | FGF | Traill | 33 min |
| Jul 19, 1:59 AM CDT | Severe Thunderstorm Warning | FGF | Walsh | 46 min |
| Jul 19, 5:07 AM CDT | Severe Thunderstorm Warning | FGF | Ransom | 23 min |
| Jul 19, 5:16 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 44 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.