Alert archive / North Dakota / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 113, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 31, 2017, 2:51 PM MDT for 4 counties in North Dakota. It was in force for 38 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
- Jul 31, 2017, 2:51 PM MDT (20:51 UTC)
- Expired
- Jul 31, 2017, 3:29 PM MDT
- In force
- 38 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Adams County, ND, Grant County, ND, Hettinger County, ND, Sioux County, ND
The radar
The Bismarck radar (KBIS), 126 km from the middle of the area, began a volume at 20:51 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 |
|---|---|---|---|
| Jul 31, 2:55 PM MDT | HAIL 1 | 3 Nw Burt, ND | HAIL FELL FROM 340 PM TO 355 PM. GROUND WAS WHITE WITH HAIL. LARGEST HAILSTONES WERE 1 INCH IN DIAMETER. |
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, 8.9 hours before the alert went out and 130 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
- 425 J/kg
- Mixed-layer CIN
- -271 J/kg
- Mixed-layer LCL
- 1028 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
816
WUUS53 KBIS 312051
SVRBIS
NDC001-037-041-085-312145-
/O.NEW.KBIS.SV.W.0113.170731T2051Z-170731T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
251 PM MDT MON JUL 31 2017
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
Southwestern Sioux County in south central North Dakota...
Southeastern Hettinger County in southwestern North Dakota...
Southwestern Grant County in south central North Dakota...
Southeastern Adams County in southwestern North Dakota...
* Until 345 PM MDT
* At 250 PM MDT, severe thunderstorms were located along a line
extending from 6 miles west of New Leipzig to 12 miles southeast of
Mott to 14 miles north of North Lemmon, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* these severe thunderstorms will remain over mainly rural areas of
southwestern Sioux...southeastern Hettinger...southwestern Grant
and southeastern Adams Counties, including the following locations:
Burt and Bentley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4615 10235 4630 10233 4645 10216 4624 10173
4595 10190 4595 10228
TIME...MOT...LOC 2050Z 331DEG 13KT 4639 10208 4624 10216 4615 10225
HAIL...1.25IN
WIND...60MPH
$$
AYD3 follow-up statements
407
WWUS53 KBIS 312108
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
308 PM MDT MON JUL 31 2017
NDC001-037-041-085-312145-
/O.CON.KBIS.SV.W.0113.000000T0000Z-170731T2145Z/
Sioux ND-Hettinger ND-Grant ND-Adams ND-
308 PM MDT MON JUL 31 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM MDT
FOR SOUTHWESTERN SIOUX...SOUTHEASTERN HETTINGER...SOUTHWESTERN GRANT
AND SOUTHEASTERN ADAMS COUNTIES...
At 307 PM MDT, severe thunderstorms were located along a line
extending from 11 miles southwest of New Leipzig to 9 miles south of
Mott, moving south at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
these severe thunderstorms will remain over mainly rural areas of
southwestern Sioux...southeastern Hettinger...southwestern Grant and
southeastern Adams Counties, including the following locations: Burt
and Bentley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4615 10235 4630 10233 4645 10216 4624 10173
4595 10190 4595 10228
TIME...MOT...LOC 2107Z 352DEG 14KT 4627 10215 4623 10229
HAIL...1.25IN
WIND...60MPH
$$
AYD393
WWUS53 KBIS 312114
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
314 PM MDT MON JUL 31 2017
NDC001-037-041-085-312145-
/O.CON.KBIS.SV.W.0113.000000T0000Z-170731T2145Z/
Sioux ND-Hettinger ND-Grant ND-Adams ND-
314 PM MDT MON JUL 31 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM MDT
FOR SOUTHWESTERN SIOUX...SOUTHEASTERN HETTINGER...SOUTHWESTERN GRANT
AND SOUTHEASTERN ADAMS COUNTIES...
At 313 PM MDT, severe thunderstorms were located along a line
extending from 12 miles southwest of New Leipzig to 11 miles south of
Mott, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
These severe thunderstorms will remain over mainly rural areas of
southwestern Sioux...southeastern Hettinger...southwestern Grant and
southeastern Adams Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4615 10235 4630 10233 4637 10218 4619 10176
4595 10190 4595 10228
TIME...MOT...LOC 2113Z 331DEG 13KT 4626 10214 4622 10228
HAIL...1.00IN
WIND...60MPH
$$
AYD189
WWUS53 KBIS 312129
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
329 PM MDT MON JUL 31 2017
NDC001-037-041-085-312138-
/O.CAN.KBIS.SV.W.0113.000000T0000Z-170731T2145Z/
Sioux ND-Hettinger ND-Grant ND-Adams ND-
329 PM MDT MON JUL 31 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SIOUX...
SOUTHEASTERN HETTINGER...SOUTHWESTERN GRANT AND SOUTHEASTERN ADAMS
COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However, small hail and
gusty winds are still possible with these thunderstorms, along with
dangerous lightning.
LAT...LON 4615 10235 4630 10233 4637 10218 4619 10176
4595 10190 4595 10228
TIME...MOT...LOC 2127Z 331DEG 13KT 4621 10210 4617 10224
$$
AYDThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:06 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 54 min |
| Jul 31, 4:52 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh | 53 min |
| Jul 31, 5:10 PM MDT | Severe Thunderstorm Warning | BIS | Kidder | 45 min |
| Jul 31, 5:22 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 29 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2017Every severe thunderstorm warning in 2017
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.