Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 124, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 4, 1999, 8:51 AM CDT for Clay County, Minnesota. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 4, 1999, 8:51 AM CDT (13:51 UTC)
- Expired
- Jul 4, 1999, 9:25 AM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Clay County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 4, 9:14 AM CDT | Hail 0.75 | Hawley, MN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 4, 8:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 1.9 hours before the alert went out and 303 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
- 1520 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 3:15 PM CDT, 17 hours 36 minutes earlier.
Area forecast discussion, Jul 3, 3:15 PM CDT, 17 hours 36 minutes before
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</html>The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 7:15 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 30 min |
| Jul 4, 8:35 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 50 min |
| Jul 4, 7:38 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 37 min |
| Jul 4, 8:01 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 34 min |
| Jul 4, 8:18 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 32 min |
| Jul 4, 8:30 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 50 min |
| Jul 4, 8:35 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 50 min |
| Jul 4, 9:15 AM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 50 min |
| Jul 4, 9:22 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 33 min |
| Jul 4, 9:54 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 31 min |
| Jul 4, 11:26 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 34 min |
| Jul 4, 12:17 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wadena | 33 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.