Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 154, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 1997, 1:58 AM CDT for Dakota County, Hennepin County, Scott County, Minnesota. It was in force for 62 min. 7 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 17, 1997, 1:58 AM CDT (06:58 UTC)
- Expired
- Jul 17, 1997, 3:00 AM CDT
- In force
- 62 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Dakota County, MN, Hennepin County, MN, Scott County, MN
The radar
The Minneapolis radar (KMPX), 18 km from the middle of the area, began a volume at 06:57 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 17, 1:59 AM CDT | Hail 1 | Richfield, MN | Hail reported just west of MSP International Airport. |
| Jul 17, 2:17 AM CDT | Thunderstorm Wind 60 | Maple Plain, MN | Three young girls injured at YMCA camp when tree blown over onto tent. Barn also blown down in vicinity. Estimated windspeed. |
| Jul 17, 2:19 AM CDT | Thunderstorm Wind 65 | Minnetrista, MN | 27 homes damaged by winds or fallng trees. Neighboring city of Independence also experienced scattered home damage due to down trees and power lines. Estimated windspeed. |
| Jul 17, 2:23 AM CDT | Thunderstorm Wind 72 | Mound, MN | Numerous trees blown down, damaging 50 homes. |
| Jul 17, 2:45 AM CDT | Thunderstorm Wind 60 | Bloomington, MN | Large tree branches down. Estimated windspeed. |
| Jul 17, 2:54 AM CDT | Thunderstorm Wind 61 | Farmington, MN | Estimated windspeed. |
| Jul 17, 3:08 AM CDT | Thunderstorm Wind 55 | Hastings, MN | Tree blown down onto road. Estimated windspeed. |
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 17, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.0 hours before the alert went out and 21 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
- 2132 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1981 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 170701 RRA
SVRMSP
MNC037-053-139-170800-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
158 AM CDT THU JUL 17 1997
* SEVERE THUNDERSTORM WARNING FOR
DAKOTA COUNTY - EAST CENTRAL MINNESOTA
HENNEPIN COUNTY - EAST CENTRAL MINNESOTA
SCOTT COUNTY - EAST CENTRAL MINNESOTA
* UNTIL 300 AM CDT
* SOME LOCATIONS AFFECTED
MINNEAPOLIS
EAGAN
SHAKOPEE
SAVAGE
* AT 156 AM CDT DOPPLER RADAR INDICATED SEVERE STORMS FROM JUST
NORTH OF LAKE MINNETONKA...ABOUT 25 MILES WEST OF
MINNEAPOLIS...TO 15 MILES SOUTH OF ST PAUL...NEAR ROSEMOUNT.
THESE STORMS WERE NEARLY STATIONARY.
OTHER SEVERE STORMS EXTENDED FROM WATERTOWN TO GAYLORD...
ABOUT 40 MILES WEST OF MINNEAPOLIS...AND THESE WERE MOVING
EAST AT 30 MPH.
THESE ARE DANGEROUS STORMS. STAY INDOORS AWAY FROM WINDOWS.
TDKThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 10:52 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 53 min |
| Jul 16, 11:07 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 53 min |
| Jul 16, 11:13 PM CDT | Severe Thunderstorm Warning | MPX | Swift | 62 min |
| Jul 16, 11:47 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 58 min |
| Jul 16, 11:58 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 62 min |
| Jul 17, 12:08 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Swift | 52 min |
| Jul 17, 12:17 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 58 min |
| Jul 17, 12:33 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Wright | 57 min |
| Jul 17, 12:40 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 65 min |
| Jul 17, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue | 65 min |
| Jul 17, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 65 min |
| Jul 17, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 65 min |
| Jul 17, 1:00 AM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville, Yellow Medicine | 60 min |
| Jul 17, 1:12 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 48 min |
| Jul 17, 1:29 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 61 min |
| Jul 17, 1:41 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 49 min |
| Jul 17, 1:51 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 54 min |
| Jul 17, 2:26 AM CDT | Flash Flood Warning | MPX | Dakota, Hennepin, Ramsey | 3 hr |
| Jul 17, 2:34 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Ramsey, Washington | 56 min |
| Jul 17, 2:55 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue | 65 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.