Alert archive / North Dakota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 13, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 30, 2011, 7:42 PM CDT for Ransom County, Richland County, Sargent County, North Dakota. It was in force for 63 min. 8 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 30, 2011, 7:42 PM CDT (00:42 UTC)
- Expired
- May 30, 2011, 8:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Ransom County, ND, Richland County, ND, Sargent County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 131 km from the middle of the area, began a volume at 00:42 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 |
|---|---|---|---|
| May 30, 8:00 PM CDT | TSTM WND DMG | 5 Sw Lidgerwood, ND | TOPS OF TREES TAKEN OFF. |
| May 30, 8:10 PM CDT | TSTM WND DMG | 3 E Gwinner, ND | 18 INCH DIAMETER TREE KNOCKED DOWN. |
| May 30, 8:15 PM CDT | TSTM WND GST 62 | 3 E Gwinner, ND | |
| May 30, 8:15 PM CDT | TSTM WND GST 68 | Gwinner, ND | |
| May 30, 8:23 PM CDT | TSTM WND DMG | Gwinner, ND | WIND SNAPPED A 12-INCH DIAMETER TREE IN TOWN. |
| May 30, 8:28 PM CDT | TSTM WND GST 65 | Mcleod, ND | ESTIMATED WIND GUST OF 65 MPH. |
| May 30, 8:31 PM CDT | HAIL 1 | Colfax, ND | |
| May 30, 8:45 PM CDT | TSTM WND DMG | Walcott, ND | REPORTS OF DAMAGE TO MANY CARS AND BUILDINGS IN WALCOTT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 30, 3:52 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.7 hours before the alert went out and 186 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
- 1125 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.0
The text
As transmitted, in the capitals the NWS used until 2016.
362 WUUS53 KFGF 310042 SVRFGF NDC073-077-081-310145- /O.NEW.KFGF.SV.W.0013.110531T0042Z-110531T0145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 742 PM CDT MON MAY 30 2011 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA... SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 845 PM CDT * AT 738 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORM WAS LOCATED NEAR BRITTON AND LAKE CITY SOUTH DAKOTA...OR 56 MILES SOUTHWEST OF WAHPETON...MOVING TO THE NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BRAMPTON AROUND 750 PM CDT. FORMAN AND RUTLAND AROUND 800 PM CDT. GENESEO AND CAYUGA AROUND 805 PM CDT. LIDGERWOOD...GWINNER AND STILES AROUND 810 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE MILNOR...MANTADOR...WYNDMERE...MOORETON...GALCHUTT AND WALCOTT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4662 9733 4662 9680 4594 9673 4595 9790 TIME...MOT...LOC 0040Z 201DEG 42KT 4582 9754 WIND...HAIL 70MPH 1.00IN $$ VOELKER
2 follow-up statements
727 WWUS53 KFGF 310103 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 803 PM CDT MON MAY 30 2011 NDC073-077-081-310145- /O.CON.KFGF.SV.W.0013.000000T0000Z-110531T0145Z/ RANSOM ND-SARGENT ND-RICHLAND ND- 803 PM CDT MON MAY 30 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR RICHLAND... SARGENT AND EASTERN RANSOM COUNTIES IN SOUTHEAST NORTH DAKOTA UNTIL 845 PM CDT... AT 801 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES SOUTHEAST OF COGSWELL TO 7 MILES SOUTH OF LIDGERWOOD...MOVING TO THE NORTHEAST AT 45 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... LIDGERWOOD...GENESEO AND STILES AROUND 810 PM CDT. HANKINSON...GWINNER AND SONORA AROUND 815 PM CDT. MILNOR...MANTADOR AND DE LAMERE AROUND 820 PM CDT. WYNDMERE AND GREAT BEND AROUND 825 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HAMLIN...MOORETON...BARNEY...MCLEOD...GALCHUTT AND WALCOTT. FOR MOTORISTS ON INTERSTATE 29...SEVERE THUNDERSTORMS WILL BE BETWEEN...MILE MARKERS 1 AND 46... PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4662 9733 4662 9680 4594 9673 4595 9790 TIME...MOT...LOC 0103Z 201DEG 42KT 4611 9771 4600 9716 $$ DTR
144 WWUS53 KFGF 310130 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 830 PM CDT MON MAY 30 2011 NDC073-077-081-310145- /O.CON.KFGF.SV.W.0013.000000T0000Z-110531T0145Z/ RANSOM ND-SARGENT ND-RICHLAND ND- 830 PM CDT MON MAY 30 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR RICHLAND... SARGENT AND EASTERN RANSOM COUNTIES IN SOUTHEAST NORTH DAKOTA UNTIL 845 PM CDT... AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4 MILES SOUTH OF VENLO TO 2 MILES NORTHEAST OF GREAT BEND... MOVING TO THE NORTH AT 50 MPH. THIS LINE OF THUNDERSTORMS PRODUCED 68 MPH WINDS AT GWINNER AT 815 PM. REPORTS OF WINDS TO 50 MPH WERE REPORTED AROUND LIDGERWOOD AND WYNDMERE. SEVERE THUNDERSTORMS WILL BE NEAR... WALCOTT...COLFAX AND CHRISTINE AROUND 845 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE BARRIE AND GALCHUTT. FOR MOTORISTS ON INTERSTATE 29...SEVERE THUNDERSTORMS WILL BE BETWEEN...MILE MARKERS 21 AND 46... PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4662 9733 4662 9680 4594 9673 4595 9790 TIME...MOT...LOC 0130Z 201DEG 42KT 4646 9745 4620 9675 $$ DTR
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:21 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Sargent | 24 min |
| May 30, 8:34 PM CDT | Tornado Warning | FGF | Richland | 26 min |
| May 30, 8:47 PM CDT | Tornado Warning | FGF | Cass | 43 min |
| May 30, 8:58 PM CDT | Tornado Warning | FGF | Grand Forks | 47 min |
| May 30, 9:06 PM CDT | Tornado Warning | FGF | Grand Forks, Traill | 39 min |
| May 30, 9:22 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 38 min |
| May 30, 9:40 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 65 min |
| May 30, 9:48 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 27 min |
| May 30, 10:20 PM CDT | Areal Flood Advisory | FGF | Grand Forks, Traill | 8 hr |
| May 31, 3:44 AM CDT | Wind Advisory | FGF | Barnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 11 more | 19 hr |
| May 31, 6:12 PM CDT | High Wind Warning | FGF | Barnes, Benson, Cavalier, Eddy, Griggs, Nelson and 4 more | 3 hr |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.