Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 267, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 11, 2007, 12:16 AM CDT for Stevens County, Minnesota. It was in force for 59 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
- Aug 11, 2007, 12:16 AM CDT (05:16 UTC)
- Expired
- Aug 11, 2007, 1:15 AM CDT
- In force
- 59 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Stevens County, MN
The radar
The Aberdeen radar (KABR), 184 km from the middle of the area, began a volume at 05:16 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 |
|---|---|---|---|
| Aug 11, 12:49 AM CDT | HAIL 0.88 | Morris, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 5.3 hours before the alert went out and 200 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
- 157 J/kg
- Mixed-layer CIN
- -357 J/kg
- Mixed-layer LCL
- 2545 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 110516 SVRMPX MNC149-110615- /O.NEW.KMPX.SV.W.0267.070811T0516Z-070811T0615Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1216 AM CDT SAT AUG 11 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... STEVENS COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 115 AM CDT * AT 1212 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 15 MILES NORTHWEST OF CHOKIO TO 14 MILES SOUTHWEST OF CHOKIO...AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... CHOKIO... DONNELLY... MORRIS... HANCOCK... STAY INDOORS...AND AWAY FROM WINDOWS. LAT...LON 4575 9625 4543 9624 4542 9577 4575 9578 $$ KAT
1 follow-up statement
000 WWUS53 KMPX 110609 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 109 AM CDT SAT AUG 11 2007 MNC149-110619- /O.EXP.KMPX.SV.W.0267.000000T0000Z-070811T0615Z/ STEVENS MN- 109 AM CDT SAT AUG 11 2007 ...THE SEVERE THUNDERSTORM WARNING FOR STEVENS COUNTY EXPIRES AT 115 AM CDT... AT 1249 AM CDT...HAIL UP TO THE SIZE OF NICKELS WAS REPORTED IN MORRIS WITH THE STORM. SEVERE STORMS HAVE WEAKENED AND MOVED OUT OF THE AREA. ADDITIONAL DEVELOPMENT IS NOT EXPECTED. LAT...LON 4575 9625 4543 9624 4542 9577 4575 9578 $$ KAT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 11:53 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 67 min |
| Aug 10, 11:59 PM CDT | Severe Thunderstorm Warning | MPX | Douglas | 46 min |
| Aug 11, 12:28 AM CDT | Severe Thunderstorm Warning | MPX | Swift | 62 min |
| Aug 11, 12:34 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi | 56 min |
| Aug 11, 12:52 AM CDT | Severe Thunderstorm Warning | MPX | Pope | 53 min |
| Aug 11, 1:07 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 53 min |
| Aug 11, 1:27 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 44 min |
| Aug 11, 1:34 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi, Swift | 56 min |
| Aug 11, 1:47 AM CDT | Severe Thunderstorm Warning | MPX | Morrison | 58 min |
| Aug 11, 1:54 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 66 min |
| Aug 11, 1:57 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Sherburne, Stearns, Wright | 63 min |
| Aug 11, 2:01 AM CDT | Severe Thunderstorm Warning | MPX | Renville | 59 min |
| Aug 11, 2:33 AM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod | 57 min |
| Aug 11, 2:44 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 61 min |
| Aug 11, 2:53 AM CDT | Flash Flood Warning | MPX | Anoka, Hennepin, Ramsey | 3 hr |
| Aug 11, 2:53 AM CDT | Flash Flood Warning | MPX | Anoka, Dakota, Hennepin, Ramsey | 3 hr |
| Aug 11, 3:01 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 29 min |
| Aug 11, 3:07 AM CDT | Flash Flood Warning | MPX | Wright | 113 min |
| Aug 11, 3:15 AM CDT | Severe Thunderstorm Warning | MPX | Sibley | 44 min |
| Aug 11, 3:27 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 63 min |
| Aug 11, 3:40 AM CDT | Flash Flood Warning | MPX | Scott | 65 min |
| Aug 11, 3:51 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 54 min |
| Aug 11, 4:39 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 39 min |
| Aug 11, 6:04 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Wright | 56 min |
| Aug 11, 6:39 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod | 66 min |
| Aug 11, 6:56 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 49 min |
| Aug 11, 6:58 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 62 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2007Every severe thunderstorm warning in 2007
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.