Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 99, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 29, 2012, 9:02 PM CDT for Barnes County, Cass County, North Dakota. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 29, 2012, 9:02 PM CDT (02:02 UTC)
- Expired
- Jul 29, 2012, 10:00 PM CDT
- In force
- 58 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Barnes County, ND, Cass County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 88 km from the middle of the area, began a volume at 02:04 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.0 hours before the alert went out and 217 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
- 629 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 2326 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
911 WUUS53 KFGF 300202 SVRFGF NDC003-017-300300- /O.NEW.KFGF.SV.W.0099.120730T0202Z-120730T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 902 PM CDT SUN JUL 29 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BARNES COUNTY IN SOUTHEAST NORTH DAKOTA... SOUTHWESTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 1000 PM CDT * AT 900 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 8 MILES SOUTHWEST OF VALLEY CITY...MOVING TO THE EAST AT 20 MPH. * AT 827 PM...THE PUBLIC REPORTED PENNY SIZE HAIL IN VALLEY CITY. * THE SEVERE THUNDERSTORM WILL BE NEAR... HASTINGS AROUND 910 PM CDT. KATHRYN AROUND 925 PM CDT. FINGAL AROUND 940 PM CDT. NOME AROUND 945 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE LUCCA AND ALICE. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4688 9752 4663 9752 4667 9832 4699 9820 TIME...MOT...LOC 0201Z 291DEG 19KT 4683 9809 WIND...HAIL 60MPH 1.00IN $$ DTR
2 follow-up statements
466 WWUS53 KFGF 300227 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 927 PM CDT SUN JUL 29 2012 NDC003-017-300300- /O.CON.KFGF.SV.W.0099.000000T0000Z-120730T0300Z/ BARNES ND-CASS ND- 927 PM CDT SUN JUL 29 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CASS AND SOUTHEASTERN BARNES COUNTIES IN SOUTHEAST NORTH DAKOTA UNTIL 1000 PM CDT... AT 925 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 5 MILES NORTHEAST OF KATHRYN...OR 14 MILES SOUTH OF VALLEY CITY...MOVING TO THE EAST AT 20 MPH. QUARTER SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. THE SEVERE THUNDERSTORM WILL BE NEAR... FINGAL AND NOME AROUND 940 PM CDT. LUCCA AROUND 950 PM CDT. ALICE AROUND 1000 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4666 9805 4694 9791 4688 9752 4663 9752 TIME...MOT...LOC 0226Z 291DEG 19KT 4673 9790 WIND...HAIL 60MPH 1.00IN $$ EWENS
616 WWUS53 KFGF 300255 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 955 PM CDT SUN JUL 29 2012 NDC003-017-300305- /O.EXP.KFGF.SV.W.0099.000000T0000Z-120730T0300Z/ BARNES ND-CASS ND- 955 PM CDT SUN JUL 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CASS AND SOUTHEASTERN BARNES COUNTIES IN SOUTHEAST NORTH DAKOTA WILL EXPIRE AT 1000 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4666 9805 4694 9791 4688 9752 4663 9752 TIME...MOT...LOC 0255Z 291DEG 19KT 4667 9769 $$ EWENS
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:11 PM CDT | Special Weather Statement | FGF | Barnes | 34 min |
| Jul 29, 8:57 PM CDT | Special Weather Statement | FGF | Grand Forks | 33 min |
| Jul 29, 9:37 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 53 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.