Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 91, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 24, 2012, 10:01 PM CDT for Cass County, Ransom County, Richland County, North Dakota; Clay County, Wilkin County, Minnesota. It was in force for 59 min. 5 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
- Jul 24, 2012, 10:01 PM CDT (03:01 UTC)
- Expired
- Jul 24, 2012, 11:00 PM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Clay County, MN, Wilkin County, MN, Cass County, ND, Ransom County, ND, Richland County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 89 km from the middle of the area, began a volume at 03:04 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 24, 10:05 PM CDT | HAIL 1.25 | 6 Nw Lisbon, ND | NICKEL TO HALF DOLLAR SIZED HAIL FELL IN A ROUGHLY MILE WIDE AND THREE MILE LONG SWATH EXTENDING FROM NORTHWEST TULLER TOWNSHIP INTO SOUTHERN MOORE TOWNSHIP THROUGH ABOUT 1020 PM CDT. |
| Jul 24, 10:20 PM CDT | HAIL 1.25 | 8 Nnw Lisbon, ND | NICKEL TO HALF DOLLAR SIZED HAIL FELL IN A ROUGHLY MILE WIDE TO THREE MILE LONG SWATH EXTENDING FROM NORTHWEST TULLER TOWNSHIP INTO SOUTHERN MOORE TOWNSHIP THROUGH ABOUT 1020 PM CDT. |
| Jul 24, 10:35 PM CDT | HAIL 1.5 | 3 Sw Enderlin, ND | LOTS OF PENNY SIZED HAIL WITH A FEW UP TO PING PONG BALL SIZED... FELL FROM 1035 TO 1040 PM IN WEST CENTRAL LIBERTY TOWNSHIP. |
| Jul 24, 10:58 PM CDT | HAIL 0.88 | West Fargo, ND | |
| Jul 24, 10:58 PM CDT | HAIL 1.25 | 3 Sw Enderlin, ND | A SECOND WAVE OF LARGE HAIL FELL ACROSS WEST CENTRAL LIBERTY TOWNSHIP THROUGH ABOUT 1105 PM CDT. |
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 |
|---|---|---|---|
| Jul 24, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 3.0 hours before the alert went out and 228 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
- 2782 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 1161 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 367 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.6
The text
As transmitted, in the capitals the NWS used until 2016.
833 WUUS53 KFGF 250301 SVRFGF MNC027-167-NDC017-073-077-250400- /O.NEW.KFGF.SV.W.0091.120725T0301Z-120725T0400Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1001 PM CDT TUE JUL 24 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN CLAY COUNTY IN NORTHWEST MINNESOTA... NORTHWESTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA... SOUTHEASTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA... NORTHERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... NORTHWESTERN RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 1100 PM CDT * AT 1000 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTHWEST OF LISBON TO 5 MILES WEST OF COLFAX...MOVING TO THE NORTHEAST AT 35 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... COLFAX AROUND 1010 PM CDT. ENDERLIN...WALCOTT AND SHELDON AROUND 1015 PM CDT. CHRISTINE AROUND 1020 PM CDT. WOLVERTON AND LEONARD AROUND 1025 PM CDT FARGO AROUND 1045 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS INCLUDE BARRIE...KINDRED...COMSTOCK...DAVENPORT...HORACE AND DOWNER. FOR MOTORISTS ON INTERSTATE 29...SEVERE THUNDERSTORMS WILL BE BETWEEN...MILE MARKERS 37 AND 70... FOR MOTORISTS ON INTERSTATE 94...SEVERE THUNDERSTORMS WILL BE BETWEEN NORTH DAKOTA MILE MARKER 328 AND MINNESOTA MILE MARKER 17... PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4701 9711 4684 9637 4637 9695 4647 9792 TIME...MOT...LOC 0301Z 227DEG 32KT 4652 9775 4645 9696 WIND...HAIL 60MPH 1.50IN $$ DK
1 follow-up statement
510 WWUS53 KFGF 250331 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1031 PM CDT TUE JUL 24 2012 MNC027-167-NDC017-073-077-250400- /O.CON.KFGF.SV.W.0091.000000T0000Z-120725T0400Z/ CASS ND-RANSOM ND-RICHLAND ND-CLAY MN-WILKIN MN- 1031 PM CDT TUE JUL 24 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CLAY COUNTY IN NORTHWEST MINNESOTA...AND NORTHWESTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA...AND NORTHWESTERN RICHLAND...NORTHEASTERN RANSOM AND SOUTHEASTERN CASS COUNTIES IN SOUTHEAST NORTH DAKOTA UNTIL 1100 PM CDT... AT 1028 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 2 MILES SOUTHEAST OF ENDERLIN TO 3 MILES SOUTHWEST OF WOLVERTON...MOVING TO THE NORTHEAST AT 25 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... KINDRED AND LEONARD AROUND 1045 PM CDT. COMSTOCK...HICKSON AND DAVENPORT AROUND 1055 PM CDT. FARGO...MOORHEAD AND GLYNDON AROUND 1100 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE DILWORTH...MAPLETON...HORACE...CASSELTON...SABIN AND RUSTAD. FOR MOTORISTS ON INTERSTATE 29...SEVERE THUNDERSTORMS WILL BE BETWEEN...MILE MARKERS 43 AND 70... FOR MOTORISTS ON INTERSTATE 94...SEVERE THUNDERSTORMS WILL BE BETWEEN NORTH DAKOTA MILE MARKER 328 AND MINNESOTA MILE MARKER 17... PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4651 9781 4701 9711 4684 9637 4643 9688 TIME...MOT...LOC 0331Z 227DEG 22KT 4662 9754 4655 9674 WIND...HAIL 60MPH 1.50IN $$ TG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 8:25 PM CDT | Areal Flood Advisory | FGF | Benson, Ramsey | 5 hr |
| Jul 24, 10:11 PM CDT | Special Weather Statement | FGF | Grand Forks, Nelson | 64 min |
| Jul 24, 10:20 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom | 55 min |
| Jul 24, 10:28 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson | 62 min |
| Jul 24, 10:59 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 61 min |
| Jul 24, 11:28 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 62 min |
| Jul 25, 12:01 AM CDT | Areal Flood Advisory | FGF | Barnes, Cass, Ransom, Richland | 10 hr |
| Jul 25, 12:20 AM CDT | Areal Flood Advisory | FGF | Grand Forks, Traill | 3 hr |
| Jul 25, 12:28 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Otter Tail, Wilkin | 62 min |
| Jul 25, 1:08 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard, Otter Tail, Wadena | 67 min |
| Jul 25, 3:18 AM CDT | Areal Flood Advisory | FGF | Becker, Clay, Hubbard, Otter Tail, Wadena, Wilkin | 7 hr |
| Jul 25, 5:42 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 63 min |
| Jul 25, 6:02 PM CDT | Special Weather Statement | FGF | Becker, Clearwater, Hubbard, Mahnomen, Otter Tail, Wadena and 1 more | 58 min |
| Jul 25, 6:13 PM CDT | Special Weather Statement | FGF | Lake of the Woods | 62 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2012Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.