Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 254, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 26, 2007, 3:50 PM CDT for Washington County, Minnesota. It was in force for 55 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 26, 2007, 3:50 PM CDT (20:50 UTC)
- Expired
- Jul 26, 2007, 4:45 PM CDT
- In force
- 55 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Washington County, MN
The radar
The Minneapolis radar (KMPX), 65 km from the middle of the area, began a volume at 20:50 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 26, 3:55 PM CDT | TSTM WND DMG | Mahtomedi, MN | TWO TREES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 26, 1:16 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.8 hours before the alert went out and 67 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
- 1237 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 262050 SVRMPX MNC163-262145- /O.NEW.KMPX.SV.W.0254.070726T2050Z-070726T2145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 350 PM CDT THU JUL 26 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 445 PM CDT * AT 346 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HUGO...OR ABOUT 16 MILES NORTHEAST OF ST PAUL...AND MOVING EAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... SCANDIA... MARINE ON ST CROIX... OTISVILLE... STILLWATER... STAY INDOORS...AND AWAY FROM WINDOWS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY EVENING FOR SOUTHERN MINNESOTA. LAT...LON 4529 9299 4506 9298 4505 9280 4529 9275 $$ KAT
2 follow-up statements
000 WWUS53 KMPX 262118 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 418 PM CDT THU JUL 26 2007 MNC163-262145- /O.CON.KMPX.SV.W.0254.000000T0000Z-070726T2145Z/ WASHINGTON MN- 418 PM CDT THU JUL 26 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR WASHINGTON COUNTY... AT 355 PM CDT...DOWNED TREES WERE REPORTED IN MAHTOMEDI. AT 415 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES SOUTHWEST OF MARINE ON SAINT CROIX...OR ABOUT 7 MILES NORTH OF STILLWATER...AND MOVING EAST AT 15 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE SCANDIA...OTISVILLE...MARINE ON SAINT CROIX AND HUGO. LAT...LON 4529 9299 4506 9298 4505 9280 4529 9275 $$
000 WWUS53 KMPX 262143 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 443 PM CDT THU JUL 26 2007 MNC163-262153- /O.EXP.KMPX.SV.W.0254.000000T0000Z-070726T2145Z/ WASHINGTON MN- 443 PM CDT THU JUL 26 2007 ...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY EXPIRES AT 445 PM CDT... SEVERE STORMS WERE ABOUT TO MOVE OUT OF THE COUNTY. PRIOR TO MOVING OUT OF THE COUNTY...TREES WERE DOWNED IN MAHTOMEDI. RELAY ANY SEVERE WEATHER REPORTS TO LOCAL LAW ENFORCEMENT FOR RELAY TO THE NATIONAL WEATHER SERVICE. LAT...LON 4529 9299 4506 9298 4505 9280 4529 9275 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 12:35 PM CDT | Severe Thunderstorm Warning | MPX | Todd | 40 min |
| Jul 26, 2:50 PM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs | 40 min |
| Jul 26, 2:55 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 50 min |
| Jul 26, 3:07 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey | 53 min |
| Jul 26, 3:34 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 41 min |
| Jul 26, 3:46 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 59 min |
| Jul 26, 4:44 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault | 46 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.