Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 11, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 22, 2012, 10:58 PM CDT for Barnes County, Griggs County, Steele County, North Dakota. It was in force for 32 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
- May 22, 2012, 10:58 PM CDT (03:58 UTC)
- Expired
- May 22, 2012, 11:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Barnes County, ND, Griggs County, ND, Steele County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 69 km from the middle of the area, began a volume at 04:00 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 |
|---|---|---|---|
| May 22, 11:15 PM CDT | HAIL 1 | 3 E Leal, ND | SEVERAL QUARTERS MIXED WITH SOME SMALLER HAIL. |
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 |
|---|---|---|---|
| May 22, 4:03 PM CDT | Tornado Watch | SPC | 7 hr |
| May 22, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 4.0 hours before the alert went out and 205 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
- 1372 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1878 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
776
WUUS53 KFGF 230358
SVRFGF
NDC003-039-091-230430-
/O.NEW.KFGF.SV.W.0011.120523T0358Z-120523T0430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1058 PM CDT TUE MAY 22 2012
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN BARNES COUNTY IN SOUTHEAST NORTH DAKOTA...
SOUTHEASTERN GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA...
SOUTHWESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA...
* UNTIL 1130 PM CDT
* AT 1055 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE
STORM WAS LOCATED NEAR URBANA...OR 18 MILES WEST OF VALLEY CITY...
MOVING TO THE NORTHEAST AT 45 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SANBORN AROUND 1105 PM CDT.
ROGERS AND LEAL AROUND 1110 PM CDT.
BALD HILL DAM AROUND 1115 PM CDT.
DAZEY AROUND 1120 PM CDT.
THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM
INCLUDE WALUM AND SIBLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
&&
LAT...LON 4742 9804 4715 9769 4711 9770 4679 9841
4707 9845
TIME...MOT...LOC 0358Z 222DEG 41KT 4696 9836
WIND...HAIL <50MPH 1.00IN
$$
VG2 follow-up statements
379
WWUS53 KFGF 230414
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1114 PM CDT TUE MAY 22 2012
NDC003-039-091-230430-
/O.CON.KFGF.SV.W.0011.000000T0000Z-120523T0430Z/
BARNES ND-GRIGGS ND-STEELE ND-
1114 PM CDT TUE MAY 22 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
STEELE...SOUTHEASTERN GRIGGS AND NORTHERN BARNES COUNTIES IN
SOUTHEAST NORTH DAKOTA UNTIL 1130 PM CDT...
AT 1109 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE
STORM WAS LOCATED 4 MILES NORTH OF ROGERS...OR 17 MILES NORTHWEST OF
VALLEY CITY...MOVING TO THE NORTHEAST AT 45 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
WALUM AROUND 1120 PM CDT.
SIBLEY AND LUVERNE AROUND 1125 PM CDT.
PILLSBURY AROUND 1130 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
&&
LAT...LON 4742 9804 4715 9770 4711 9770 4688 9820
4715 9835
TIME...MOT...LOC 0414Z 219DEG 46KT 4717 9814
$$
VG942
WWUS53 KFGF 230423
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1123 PM CDT TUE MAY 22 2012
NDC003-039-091-230433-
/O.EXP.KFGF.SV.W.0011.000000T0000Z-120523T0430Z/
BARNES ND-GRIGGS ND-STEELE ND-
1123 PM CDT TUE MAY 22 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN STEELE...
SOUTHEASTERN GRIGGS AND NORTHERN BARNES COUNTIES IN SOUTHEAST NORTH
DAKOTA WILL EXPIRE AT 1130 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
LAT...LON 4742 9804 4715 9770 4711 9770 4688 9820
4715 9835
TIME...MOT...LOC 0423Z 219DEG 46KT 4726 9803
$$
VGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 9:50 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Griggs, Nelson, Steele | 40 min |
| May 22, 11:02 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Walsh | 28 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; radar from the NEXRAD Level II archive.