Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 319, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 13, 2007, 11:30 PM CDT for Washington County, Minnesota; Saint Croix County, Wisconsin. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2007, 11:30 PM CDT (04:30 UTC)
- Expired
- Aug 14, 2007, 12:30 AM CDT
- In force
- 60 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Washington County, MN, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 81 km from the middle of the area, began a volume at 04:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 6:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.5 hours before the alert went out and 83 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
- 2096 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 409 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 140430 SVRMPX MNC163-WIC109-140530- /O.NEW.KMPX.SV.W.0319.070814T0430Z-070814T0530Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1130 PM CDT MON AUG 13 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA... ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 1230 AM CDT * AT 1126 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES NORTH OF STILLWATER TO 15 MILES SOUTHWEST OF HUDSON...AND MOVING EAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... HUDSON... SOMERSET... NEW RICHMOND... BALDWIN... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT TUESDAY MORNING FOR SOUTHERN MINNESOTA. LAT...LON 4520 9283 4486 9290 4486 9215 4519 9221 $$
1 follow-up statement
000 WWUS53 KMPX 140457 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1156 PM CDT MON AUG 13 2007 MNC163-WIC109-140530- /O.CON.KMPX.SV.W.0319.000000T0000Z-070814T0530Z/ WASHINGTON MN-ST. CROIX WI- 1156 PM CDT MON AUG 13 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR ST. CROIX AND WASHINGTON COUNTIES... AT 1151 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM HUNTINGTON TO 9 MILES SOUTH OF HAMMOND...AND MOVING EAST AT 40 MPH. PENNY SIZE HAIL WILL ALSO BE POSSIBLE ACROSS SOUTHERN WASHINGTON COUNTY. OTHER LOCATIONS IN THE WARNING INCLUDE NORTH HUDSON...HUNTINGTON... HOULTON...HERSEY...FOREST...EMERALD...CYLON...BURKHARDT...BOARDMAN AND OAK PARK HEIGHTS. LAT...LON 4520 9283 4486 9290 4486 9215 4519 9221 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:44 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs | 61 min |
| Aug 13, 7:57 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 18 min |
| Aug 13, 8:08 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 52 min |
| Aug 13, 8:17 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Sherburne | 58 min |
| Aug 13, 8:43 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago | 62 min |
| Aug 13, 8:47 PM CDT | Severe Thunderstorm Warning | MPX | Stearns, Todd | 58 min |
| Aug 13, 8:52 PM CDT | Tornado Warning | MPX | Anoka, Sherburne | 23 min |
| Aug 13, 9:15 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Ramsey, Washington | 60 min |
| Aug 13, 9:45 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns, Wright | 60 min |
| Aug 13, 10:42 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Wright | 63 min |
| Aug 13, 10:46 PM CDT | Flash Flood Warning | MPX | Hennepin | 119 min |
| Aug 13, 11:37 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue | 53 min |
| Aug 13, 11:48 PM CDT | Flash Flood Warning | MPX | Dakota, Scott | 117 min |
| Aug 13, 11:51 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 29 min |
| Aug 14, 12:26 AM CDT | Flash Flood Warning | MPX | Goodhue | 2 hr |
| Aug 14, 12:29 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 48 min |
| Aug 13, 10:00 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce | 60 min |
| Aug 13, 10:15 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 30 min |
| Aug 13, 10:21 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 54 min |
| Aug 13, 11:10 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 31 min |
| Aug 14, 12:05 AM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin | 55 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2007Severe Thunderstorm Warnings in Wisconsin, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.