Alert archive / North Dakota / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 13, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 21, 2014, 3:57 PM CDT for Cass County, Steele County, Traill County, North Dakota. It was in force for 49 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
- Jun 21, 2014, 3:57 PM CDT (20:57 UTC)
- Expired
- Jun 21, 2014, 4:46 PM CDT
- In force
- 49 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Cass County, ND, Steele County, ND, Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 22 km from the middle of the area, began a volume at 21:00 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 21, 4:00 PM CDT | HAIL 1.75 | 1 Sw Galesburg, ND | RANGED FROM QUARTER TO GOLF BALL SIZE. |
| Jun 21, 4:00 PM CDT | HAIL 1.75 | Galesburg, ND | |
| Jun 21, 4:10 PM CDT | HAIL 1 | 5 S Hillsboro, ND | VIA VALLEY NEWS LIVE FACEBOOK PAGE. TIME ESTIMATED. |
| Jun 21, 4:30 PM CDT | HAIL 1.75 | 2 N Hillsboro, ND | PIC ON FACEBOOK PAGE |
| Jun 21, 4:30 PM CDT | HAIL 1.75 | Hillsboro, ND | PUBLIC REPORT VIA VALLEY NEWS LIVE FACEBOOK |
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 |
|---|---|---|---|
| Jun 21, 3:37 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.0 hours before the alert went out and 273 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
- 13 J/kg
- Mixed-layer CIN
- -255 J/kg
- Mixed-layer LCL
- 1795 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
027 WUUS53 KFGF 212057 SVRFGF NDC017-091-097-212200- /O.NEW.KFGF.SV.W.0013.140621T2057Z-140621T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 357 PM CDT SAT JUN 21 2014 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... SOUTHEASTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA... SOUTHERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 500 PM CDT * AT 356 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 16 MILES SOUTH OF PORTLAND...AND MOVING EAST AT 25 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...DAMAGE TO VEHICLES IS EXPECTED. * THE SEVERE THUNDERSTORM WILL BE NEAR... BLANCHARD AROUND 420 PM CDT. KELSO AND GRANDIN AROUND 435 PM CDT. HILLSBORO AROUND 440 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM...ON THE LOWEST FLOOR OF A BUILDING. TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS! && LAT...LON 4751 9705 4725 9684 4718 9746 4731 9756 TIME...MOT...LOC 2057Z 248DEG 22KT 4727 9739 HAIL...1.00IN WIND...<50MPH $$ HOPKINS
1 follow-up statement
654 WWUS53 KFGF 212146 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 446 PM CDT SAT JUN 21 2014 NDC017-091-097-212156- /O.CAN.KFGF.SV.W.0013.000000T0000Z-140621T2200Z/ CASS ND-STEELE ND-TRAILL ND- 446 PM CDT SAT JUN 21 2014 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TRAILL...SOUTHEASTERN STEELE AND NORTH CENTRAL CASS COUNTIES IN SOUTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4751 9705 4725 9684 4718 9746 4731 9756 TIME...MOT...LOC 2146Z 248DEG 22KT 4738 9698 $$ DK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 12:20 PM CDT | Flash Flood Watch | FGF | Barnes, Cass, Eddy, Grand Forks, Griggs, Nelson and 6 more | 16 hr |
| Jun 21, 2:59 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 61 min |
| Jun 21, 3:28 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Traill | 62 min |
| Jun 21, 4:32 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 43 min |
| Jun 21, 4:38 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 32 min |
| Jun 21, 6:10 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 65 min |
| Jun 21, 6:16 PM CDT | Severe Thunderstorm Warning | FGF | Sargent | 59 min |
| Jun 21, 6:30 PM CDT | Special Weather Statement | FGF | Grand Forks | 60 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2014Every severe thunderstorm warning in 2014
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.