Alert archive / Minnesota / Red Flag Warnings in 2009
Red Flag Warning 5, NWS Twin Cities, MN
NWS Twin Cities, MN issued this red flag warning at May 20, 2009, 3:14 AM CDT for 8 counties in Minnesota. It took effect at May 20, 2009, 10:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 20, 2009, 3:14 AM CDT (08:14 UTC)
- In effect from
- May 20, 2009, 10:00 AM CDT
- Expired
- May 20, 2009, 7:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Twin Cities, MN
Counties Anoka County, MN, Benton County, MN, Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Sherburne County, MN
The radar
The Minneapolis radar (KMPX), 92 km from the middle of the area, began a volume at 08:17 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.2 hours before the alert went out and 91 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3838 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS83 KMPX 200814 RFWMPX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 314 AM CDT WED MAY 20 2009 ...RED FLAG WARNING FROM 10 AM THIS MORNING UNTIL 7 PM CDT THIS EVENING FOR EAST CENTRAL MINNESOTA FOR LOW HUMIDITY AND STRONG WINDS... .A RED FLAG WARNING HAS BEEN ISSUED FOR AREAS OF EAST CENTRAL MINNESOTA TO THE NORTHEAST OF A LINE FROM LITTLE FALLS...TO ST CLOUD...TO THE NORTHERN SUBURBS OF THE TWIN CITIES METROPOLITAN AREA. SOUTHERLY WINDS WILL INCREASE THIS MORNING INTO THE 25 TO 35 MPH RANGE AHEAD OF A LOW PRESSURE SYSTEM OVER THE DAKOTAS. IT WILL BE A HOT DAY WITH HIGHS THIS AFTERNOON AROUND 90. THE HEAT COUPLED WITH DEW POINTS IN THE UPPER 40S WILL RESULT IN AFTERNOON HUMIDITY VALUES DROPPING TO BETWEEN 20 AND 25 PERCENT. THE STRONG WINDS AND LOW RELATIVE HUMIDITIES ARE FAVORABLE FOR THE RAPID SPREAD OF FIRE IF ONE DEVELOPED. MNZ043>045-050>053-061-201615- /O.UPG.KMPX.FW.A.0003.090520T1500Z-090521T0000Z/ /O.NEW.KMPX.FW.W.0005.090520T1500Z-090521T0000Z/ MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-ANOKA- 314 AM CDT WED MAY 20 2009 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. SOUTHERLY WINDS WILL INCREASE THIS MORNING INTO THE 25 TO 35 MPH RANGE AHEAD OF A LOW PRESSURE SYSTEM OVER THE DAKOTAS. IT WILL BE A HOT DAY WITH HIGHS THIS AFTERNOON AROUND 90. THE HEAT COUPLED WITH DEW POINTS IN THE UPPER 40S WILL RESULT IN AFTERNOON HUMIDITY VALUES DROPPING TO BETWEEN 20 AND 25 PERCENT. THE STRONG WINDS AND LOW RELATIVE HUMIDITIES ARE FAVORABLE FOR THE RAPID SPREAD OF FIRE IF ONE DEVELOPED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ RAH
2 follow-up statements
000 WWUS83 KMPX 201654 RFWMPX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1154 AM CDT WED MAY 20 2009 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR EAST CENTRAL MINNESOTA FOR LOW HUMIDITY AND STRONG WINDS... .A RED FLAG WARNING HAS BEEN ISSUED FOR AREAS OF EAST CENTRAL MINNESOTA TO THE NORTHEAST OF A LINE FROM LITTLE FALLS...TO ST CLOUD...TO THE NORTHERN SUBURBS OF THE TWIN CITIES METROPOLITAN AREA. SOUTH TO SOUTHWEST WINDS OF 25 TO 35 MPH...WITH A FEW GUSTS TO NEAR 45 MPH...WILL BE COMMON ACROSS THE AREA THIS AFTERNOON INTO THE EARLY EVENING. IT WILL BE A HOT DAY WITH HIGHS THIS AFTERNOON AROUND 90. THE HEAT COUPLED WITH DEW POINTS IN THE UPPER 40S WILL RESULT IN AFTERNOON HUMIDITY VALUES DROPPING TO BETWEEN 20 AND 25 PERCENT. THE STRONG WINDS AND LOW RELATIVE HUMIDITIES ARE FAVORABLE FOR THE RAPID SPREAD OF FIRE IF ONE DEVELOPED. MNZ043>045-050>053-061-210000- /O.CON.KMPX.FW.W.0005.000000T0000Z-090521T0000Z/ MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-ANOKA- 1154 AM CDT WED MAY 20 2009 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING. SOUTH TO SOUTHWEST WINDS OF 25 TO 35 MPH...WITH A FEW GUSTS TO NEAR 45 MPH...WILL BE COMMON ACROSS THE AREA THIS AFTERNOON INTO THE EARLY EVENING. IT WILL BE A HOT DAY WITH HIGHS THIS AFTERNOON AROUND 90. THE HEAT COUPLED WITH DEW POINTS IN THE UPPER 40S WILL RESULT IN AFTERNOON HUMIDITY VALUES DROPPING TO BETWEEN 20 AND 25 PERCENT. THE STRONG WINDS AND LOW RELATIVE HUMIDITIES ARE FAVORABLE FOR THE RAPID SPREAD OF FIRE IF ONE DEVELOPED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
000 WWUS83 KMPX 202345 RFWMPX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 645 PM CDT WED MAY 20 2009 ...WINDS TO SUBSIDE INTO TONIGHT EASING DANGEROUS WILDFIRE CONDITIONS... .THE RED FLAG WARNING IN EFFECT FOR PART OF EAST CENTRAL MINNESOTA WILL EXPIRE AT 7 PM THIS EVENING. SOUTHERLY WINDS HAVE BEGAN TO DECREASE AND WILL CONTINUE TO THIS EVENING. ALSO...GRADUAL MOISTENING AHEAD OF A COLD FRONT WILL IMPROVE CONDITIONS. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. EARLIER TODAY...WIND GUSTS WITHIN THE RED FLAG WARNING AREA REACHED 30 TO 40 MPH...WHILE HUMIDITIES DROPPED TO 20 TO 25 PERCENT. MNZ043>045-050>053-061-210045- /O.EXP.KMPX.FW.W.0005.000000T0000Z-090521T0000Z/ MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-ANOKA- 645 PM CDT WED MAY 20 2009 ...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. THE RED FLAG WARNING IN EFFECT FOR PART OF EAST CENTRAL MINNESOTA WILL EXPIRE AT 7 PM THIS EVENING. SOUTHERLY WINDS HAVE BEGAN TO DECREASE AND WILL CONTINUE TO THIS EVENING. ALSO...GRADUAL MOISTENING AHEAD OF A COLD FRONT WILL IMPROVE CONDITIONS. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. EARLIER TODAY...WIND GUSTS WITHIN THE RED FLAG WARNING AREA REACHED 30 TO 40 MPH...WHILE HUMIDITIES DROPPED TO 20 TO 25 PERCENT. $$
Nearby
Red Flag Warnings in Minnesota, 2009Every red flag warning in 2009
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.