Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 36, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 20, 2012, 3:40 PM CDT for Benson County, Ramsey County, Towner County, North Dakota. It was in force for 65 min. 1 report 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
- Jun 20, 2012, 3:40 PM CDT (20:40 UTC)
- Expired
- Jun 20, 2012, 4:45 PM CDT
- In force
- 65 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Benson County, ND, Ramsey County, ND, Towner County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 3:50 PM CDT | HAIL 0.75 | Maza, ND |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.7 hours before the alert went out and 227 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
- 9 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1176 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
393 WUUS53 KFGF 202040 SVRFGF NDC005-071-095-202145- /O.NEW.KFGF.SV.W.0036.120620T2040Z-120620T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 340 PM CDT WED JUN 20 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTH CENTRAL BENSON COUNTY IN NORTHEAST NORTH DAKOTA... NORTHWESTERN RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA... SOUTHEASTERN TOWNER COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 445 PM CDT * AT 336 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED NEAR MAZA...OR 24 MILES NORTHWEST OF DEVILS LAKE...MOVING TO THE EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WEBSTER...STARKWEATHER AND GARSKE AROUND 440 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4854 9865 4822 9861 4831 9930 4846 9931 TIME...MOT...LOC 2040Z 269DEG 12KT 4838 9919 WIND...HAIL <50MPH 1.00IN $$ DK
2 follow-up statements
702 WWUS53 KFGF 202105 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 405 PM CDT WED JUN 20 2012 NDC005-202115- /O.CAN.KFGF.SV.W.0036.000000T0000Z-120620T2145Z/ BENSON ND- 405 PM CDT WED JUN 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL BENSON COUNTY IN NORTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY. LAT...LON 4849 9906 4854 9865 4822 9861 4828 9907 TIME...MOT...LOC 2105Z 265DEG 17KT 4836 9900 $$ NDC071-095-202145- /O.CON.KFGF.SV.W.0036.000000T0000Z-120620T2145Z/ RAMSEY ND-TOWNER ND- 405 PM CDT WED JUN 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN TOWNER AND CENTRAL RAMSEY COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL 445 PM CDT... AT 404 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 6 MILES WEST OF GARSKE...OR 18 MILES NORTH OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... WEBSTER AROUND 420 PM CDT. STARKWEATHER AND GARSKE AROUND 425 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4849 9906 4854 9865 4822 9861 4828 9907 TIME...MOT...LOC 2105Z 265DEG 17KT 4836 9900 WIND...HAIL <50MPH 1.00IN $$ DK
271 WWUS53 KFGF 202142 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 442 PM CDT WED JUN 20 2012 NDC071-095-202152- /O.EXP.KFGF.SV.W.0036.000000T0000Z-120620T2145Z/ RAMSEY ND-TOWNER ND- 442 PM CDT WED JUN 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TOWNER AND CENTRAL RAMSEY COUNTIES IN NORTHEAST NORTH DAKOTA WILL EXPIRE AT 445 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER SEVERE. LAT...LON 4849 9906 4854 9865 4822 9861 4828 9907 TIME...MOT...LOC 2142Z 265DEG 17KT 4837 9874 $$ DK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 3:26 PM CDT | Special Weather Statement | FGF | Ramsey | 64 min |
| Jun 20, 5:42 PM CDT | Special Weather Statement | FGF | Nelson | 63 min |
| Jun 20, 6:56 PM CDT | Tornado Warning | FGF | Grand Forks | 34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.