Alert archive / Minnesota / Special Weather Statements in 2012
Special Weather Statement, NWS Grand Forks, ND
NWS Grand Forks, ND issued this special weather statement at Jun 30, 2012, 11:21 PM CDT for Mahnomen County, Minnesota. It was in force for 54 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 30, 2012, 11:21 PM CDT (04:21 UTC)
- Expired
- Jul 1, 2012, 12:15 AM CDT
- In force
- 54 min
- Issued by
- NWS Grand Forks, ND
County Mahnomen County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 104 km from the middle of the area, began a volume at 04:21 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 |
|---|---|---|---|
| Jun 30, 11:30 PM CDT | TSTM WND DMG | 4 Nw Fertile, MN | REPORTED DIME SIZED HAIL...50 FT PINE TREES DOWN AND SEVERAL DOGWOOD TREES DOWN IN AREA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 4.4 hours before the alert went out and 229 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2455 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
487 WWUS83 KFGF 010421 SPSFGF SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1121 PM CDT SAT JUN 30 2012 MNZ001-002-015-022-010515- EAST POLK MN-MAHNOMEN MN-NORMAN MN-WEST POLK MN- 1121 PM CDT SAT JUN 30 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POLK...NORTHEASTERN NORMAN AND NORTHERN MAHNOMEN COUNTIES UNTIL 1215 AM CDT... AT 1117 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM NEAR FERTILE...OR 40 MILES SOUTH OF THIEF RIVER FALLS...MOVING TO THE EAST AT 35 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THE STORM. THE STORM WILL BE NEAR... FERTILE AROUND 1125 PM CDT. FLAMING AROUND 1130 PM CDT. RINDAL AND RANUM AROUND 1140 PM CDT. WINGER AROUND 1150 PM CDT. BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. LAT...LON 4757 9556 4723 9557 4748 9653 4765 9646 TIME...MOT...LOC 0420Z 286DEG 30KT 4754 9636 $$ BRAMER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:15 AM CDT | Special Weather Statement | FGF | Becker | 60 min |
| Jul 1, 6:02 PM CDT | Special Weather Statement | FGF | Beltrami | 58 min |
| Jul 1, 6:43 PM CDT | Special Weather Statement | FGF | Polk | 32 min |
| Jun 30, 8:24 PM CDT | Special Weather Statement | FGF | Barnes | 66 min |
| Jun 30, 8:52 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 40 min |
| Jun 30, 9:20 PM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 32 min |
Nearby
Special Weather Statements in Minnesota, 2012Every special weather statement 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.