Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 133, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 22, 1999, 6:45 PM CDT for Dickey County, LaMoure County, Stutsman County, North Dakota. It was in force for 60 min. 2 reports 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 22, 1999, 6:45 PM CDT (23:45 UTC)
- Expired
- Jul 22, 1999, 7:45 PM CDT
- In force
- 60 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Dickey County, ND, LaMoure County, ND, Stutsman County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 22, 6:54 PM CDT | Hail 1.75 | Jamestown, ND | |
| Jul 22, 7:00 PM CDT | Hail 0.88 | Jamestown, ND |
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 22, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.8 hours before the alert went out and 158 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
- 2531 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 2.9
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 Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 3:35 PM CDT, 3 hours 10 minutes earlier.
Area forecast discussion, Jul 22, 3:35 PM CDT, 3 hours 10 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 335 PM CDT THU JUL 22 1999 SFC LOW IN CNTRL SD WI TROUGH EXTENDING TO JMS AND GFK. THIS FEATURE AND EWD IS MAIN FOCUS OF SVR TSTM THREAT. FEEL BIS AREA CLOSE ENOUGH TO LOW WI DWPT IN LOW 70S AND LIS LESS THAN -9 THIS AFTN TO WARRANT CHC TSMS. MAY HAVE TO INCLUDE DIK/MOT AREA ALSO. VORT MAX IN SRN CAN WI VORT TAIL MOVING ACROSS NRN ND TON. WL KEEP CHC TSTMS TON NORTH. FRI LOOKS MS AND HOT...BUT ALL THREE MODELS HAVE VORT MOVING IN LATE FRI AFTN/FRI NT. HOT AGAIN SAT. H7 CAP SETS UP AND AVN CARRIES IT THROUGH ENOUGH TO KEEP STRONG VORT FROM PRODUCING TSTMS IN ND. WL PUT CHC SAT NT IN THE NORTH WHERE CAP WILL BE WEAKEST. CAP BREAKS DOWN FOR SUN AND MON WI SFC LOW AND H5 ENERGY MOVES ACROSS THE STA. NOTHING SIG FOR TUE. .BIS...NONE. VINING
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 11:45 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 60 min |
| Jul 22, 12:34 AM CDT | Severe Thunderstorm Warning | BIS | Divide | 66 min |
| Jul 22, 12:34 AM CDT | Severe Thunderstorm Warning | BIS | Divide | 61 min |
| Jul 22, 12:47 AM CDT | Severe Thunderstorm Warning | BIS | Williams | 63 min |
| Jul 22, 1:25 AM CDT | Severe Thunderstorm Warning | BIS | Burke, Mountrail | 65 min |
| Jul 22, 2:07 AM CDT | Severe Thunderstorm Warning | BIS | Williams | 63 min |
| Jul 22, 2:10 AM CDT | Severe Thunderstorm Warning | BIS | Renville, Ward | 65 min |
| Jul 22, 2:28 AM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 47 min |
| Jul 22, 2:39 AM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 61 min |
| Jul 22, 2:58 AM CDT | Severe Thunderstorm Warning | BIS | Ward | 62 min |
| Jul 22, 3:30 AM CDT | Severe Thunderstorm Warning | BIS | McHenry | 60 min |
| Jul 22, 4:02 AM CDT | Severe Thunderstorm Warning | BIS | Pierce | 58 min |
| Jul 22, 4:18 AM CDT | Severe Thunderstorm Warning | BIS | Rolette | 57 min |
| Jul 22, 4:30 PM CDT | Severe Thunderstorm Warning | BIS | McIntosh | 30 min |
| Jul 22, 5:03 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure, Logan, McIntosh | 57 min |
| Jul 22, 5:03 PM CDT | Severe Thunderstorm Warning | BIS | Dickey | 57 min |
| Jul 22, 5:39 PM CDT | Tornado Warning | BIS | McIntosh | 36 min |
| Jul 22, 6:00 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure, Logan, Stutsman | 45 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 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.