193  
FOUS30 KWBC 272002  
QPFERD  
 
EXCESSIVE RAINFALL DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
402 PM EDT SUN SEP 27 2026  
 
DAY 1  
VALID 16Z SUN SEP 27 2026 - 12Z MON SEP 28 2026  
 
...THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL FOR PARTS OF THE  
NORTHEAST, PARTS OF THE HILL COUNTRY TO NORTH-CENTRAL TEXAS, AS  
WELL AS PARTS OF ARIZONA...  
   
..16Z UPDATE
 
 
   
..NORTHEAST
 
 
IN COORDINATION WITH OKX/UPTON, NY AND BOX/TAUNTON, MA FORECAST  
OFFICES, THE SLIGHT RISK WAS DROPPED WITH THIS UPDATE. THE  
NOR'EASTER CONTINUES ACROSS MUCH OF THE NORTHEAST THIS MORNING. THE  
STORM HAS BEGUN WEAKENING, WITH ANY HEAVIER RAINFALL CONCENTRATED  
IN RATHER NARROW BANDS. THE MOST SIGNIFICANT IS THE ONE SOUTHEAST  
OF BOSTON, WHICH IS NEARLY STATIONARY. EVEN WITHIN THAT BAND, RATES  
ARE BETWEEN 1/2 AND 3/4 INCH PER HOUR. MORE BANDS ARE EXPECTED TO  
IMPACT THE NYC METRO, NORTHERN NJ, AND SOUTHERN NEW ENGLAND LATE  
THIS AFTERNOON THROUGH TONIGHT, BUT THEY TOO ARE NOT EXPECTED TO  
FEATURE MUCH HEAVY RAINFALL. THUS, THE FLASH FLOODING THREAT IS  
LIKELY TO BE ISOLATED AT BEST, LEADING TO THE MARGINAL RISK  
DOWNGRADE.  
   
..TEXAS
 
 
A SURGE OF MOISTURE, THE LEADING EDGE OF A MULTI-DAY LOW LEVEL JET  
WHICH WILL FUEL A MULTI-DAY HEAVY RAINFALL EVENT IN THIS AREA, WILL  
BEGIN TO ADVANCE NORTHWARD FROM OFF THE GULF AND INTO THE SOUTHERN  
PLAINS TODAY. UPPER LEVEL RIDGING AND A DISTINCT LACK OF FORCING  
WILL PUT A CAP ON ANY SIGNIFICANT RAINS TODAY. HOWEVER, ALONG  
FRONTAL BOUNDARY/INTERFACE, A FEW ISOLATED STORMS CAN'T BE RULED  
OUT, ESPECIALLY ALONG THE BALCONES ESCARPMENT, WHERE TOPOGRAPHY  
ORIENTED PERPENDICULAR TO THE SOUTHEASTERLY FLOW MAY ALLOW FOR A  
STATIONARY STORM OR TWO. INTO NORTH CENTRAL TEXAS, IT WILL BE THE  
WARM FRONTAL INTERFACE HAVING TO DO ALL THE WORK TO CAUSE ANY  
STORMS CAPABLE OF FLASH FLOODING. SOILS REMAIN WELL DRIER THAN  
NORMAL, SO THIS IS A VERY LOW-END MARGINAL, WITH ONLY AN ISOLATED  
INSTANCE OF FLASH FLOODING OR 2 POSSIBLE. THE INHERITED MARGINAL  
WAS LEFT LARGELY UNCHANGED, SAVE FOR A FEW VERY MINOR TWEAKS IN  
SOUTHERN OKLAHOMA.  
   
..ARIZONA
 
 
THE BEGINNING OF A SURGE OF MOISTURE ASSOCIATED WITH THE UPPER HALF  
OF EAST PACIFIC TROPICAL STORM ODALYS WILL MOVE INTO THE SOUTHWEST  
TODAY. INGREDIENTS FOR A MULTI-DAY HEAVY RAIN AND FLASH FLOODING  
EVENT ACROSS THE SOUTHWEST, WHICH WILL UNFOLD OVER THE COMING DAYS,  
WILL ONLY BEGIN TO COME TOGETHER TODAY. THUS, WHILE WIDELY  
SCATTERED SHOWERS AND STORMS ARE LIKELY, RESULTANT FLASH FLOODING  
SHOULD BE ISOLATED AT BEST. NO SIGNIFICANT CHANGES WERE MADE FROM  
INHERITED.  
 
WEGMAN  
   
..PREVIOUS DISCUSSION
 
 
...NEW JERSEY, SOUTHERN NEW YORK, AND SOUTHERN TO CENTRAL NEW  
ENGLAND... A SLOW-MOVING NOR'EASTER LINGERING ALONG THE COAST NEAR  
NORTHERN NEW JERSEY AND EASTERN LONG ISLAND WILL CONTINUE TO FUNNEL  
MOISTURE ACROSS SOUTHERN NEW ENGLAND, SOUTHERN NEW YORK, AND NEW  
JERSEY. PERSISTENT NORTHERLY FLOW WILL KEEP INSTABILITY LOW,  
LIMITING INSTANTANEOUS RAINFALL RATES; HOWEVER, SATURATED SOILS  
FROM COASTAL INUNDATION AND PRIOR HEAVY RAINS WILL MAINTAIN AN  
ELEVATED RISK FOR FLOODING, ESPECIALLY IN URBAN AND POOR DRAINAGE  
AREAS. A SLIGHT RISK WAS MAINTAINED FROM EASTERN MASSACHUSETTS TO  
THE NYC METRO WHERE ADDITIONAL RAINFALL AMOUNTS OF 1-3 INCHES, WITH  
ISOLATED HEAVIER AMOUNTS, ARE EXPECTED. A MARGINAL RISK REMAINS  
FARTHER NORTH INTO PARTS OF UPSTATE NEW YORK AND CENTRAL NEW  
ENGLAND, WHERE OROGRAPHIC EFFECTS COULD HELP SUPPORT SOME HEAVIER  
TOTALS.  
   
..SOUTHERN PLAINS
 
 
THE OVERNIGHT CAMS GUIDANCE IS SHOWING SOME SIGNAL FOR LOCALIZED  
HEAVY AMOUNTS DEVELOPING ALONG A RIBBON OF HIGHER PWS EXTENDING  
FROM THE TEXAS HILL COUNTRY INTO SOUTH-CENTRAL OKLAHOMA. THE HREF  
AND REFS GUIDANCE INDICATE SOME POTENTIAL FOR LOCALIZED AMOUNTS OF  
2+ INCHES AND SOME MODEST PROBABILITIES FOR AMOUNTS EXCEEDING 3-HR  
FFGS, ESPECIALLY AROUND THE TEXAS HILL COUNTRY. THEREFORE, A MARGINAL  
RISK WAS INTRODUCED FOR THIS AREA.  
   
..SOUTHWEST
 
 
FLOW IS EXPECTED TO TURN SOUTHWEST AHEAD OF A TROUGH DIGGING INTO  
CALIFORNIA, WHICH WILL BEGIN TO DRAW MOISTURE FROM HURRICANE POLO  
INTO THE REGION. OVERALL, CONDITIONS ARE EXPECTED TO REMAIN  
RELATIVELY QUIET, IN WHAT IS EXPECTED TO BE LAST DAY BEFORE  
CONDITIONS GREATLY DETERIORATE ACROSS THE THE REGION. HOWEVER,  
THERE IS A LOW-END THREAT FOR ISOLATED FLOODING, ESPECIALLY ACROSS  
PORTIONS OF NORTHERN ARIZONA, WHERE FAVORABLE MID-TO-UPPER LEVEL  
DYNAMICS MAY INTERACT WITH THE DEEPENING MOISTURE.  
 
PEREIRA  
 
 
DAY 2  
VALID 12Z MON SEP 28 2026 - 12Z TUE SEP 29 2026  
 
...THERE IS A MODERATE RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF  
THE SOUTHWEST/FOUR CORNERS...  
   
..2030Z UPDATE
 
 
   
..SOUTHWEST
 
 
NO MAJOR CHANGES WERE NEEDED WITH THE AFTERNOON UPDATE TODAY. THE  
PRE FROM THE COMBINATION OF ODALYS AND THE APPROACH OF POLO IS  
STILL EXPECTED TO PRODUCE A WIDESPREAD 1-3 INCHES OF RAIN ACROSS  
THE FOUR CORNERS REGION, WHERE MOST SOILS ARE ALREADY AT OR NEAR  
SATURATION FROM RECENT HEAVY RAINFALL. THE MODERATE RISK FORKS A  
BIT FURTHER SOUTH IN NEW MEXICO TO INCLUDE THE LORDSBURG, NM AREA,  
WHERE NUMEROUS BURN SCARS ARE, AND TO INCLUDE THE REST OF THE  
SACRAMENTO MOUNTAINS IN SOUTH-CENTRAL COLORADO. SOME MINOR TWEAKS  
WERE MADE TO THE SURROUNDING SLIGHT, BUT SINCE THERE HAVEN'T BEEN  
MAJOR CHANGES TO THE TRACK, AND THE FLOW WILL BE UNIFORMLY OUT OF  
THE SOUTHWEST, SOUTH AND WEST FACING SLOPES ALONG THE MOGOLLON RIM,  
AND THE SAN JUANS ARE LIKELY TO SEE THE MOST RAINFALL. ROCKY SOILS,  
BURN SCARS, AND SLOT CANYONS WILL ALL LOCALLY EXACERBATE ANY  
FLOODING FROM THE WIDESPREAD RAINFALL.  
   
..NORTHERN PLAINS
 
 
NO SIGNIFICANT CHANGES WERE MADE TO THE SLIGHT RISK AREA IN EASTERN  
NORTH DAKOTA AND FAR NORTHWESTERN MINNESOTA. THE QPF DID COME UP A  
BIT THERE, SO THERE IS SOME POTENTIAL THAT A HIGHER-END SLIGHT MAY  
BE NEEDED SHOULD THOSE TRENDS CONTINUE.  
 
WEGMAN  
   
..PREVIOUS DISCUSSION
 
 
   
..SOUTHWEST/FOUR CORNERS
 
 
A PREDECESSOR RAINFALL EVENT (PRE) IS LIKELY TO IMPACT MUCH OF THE  
REGION BEGINNING BY MIDDAY AND CONTINUE INTO THE END OF THE  
PERIOD. MOISTURE PRECEDING THE ARRIVAL OF THE PRIMARY MOISTURE  
PLUME ASSOCIATED WITH HURRICANE POLO WILL CONTINUE TO SPREAD ACROSS  
THE REGION AS IT IS DRAWN NORTHEASTWARD AHEAD OF A MID-TO-UPPER  
LEVEL LOW DIGGING SOUTH ACROSS CALIFORNIA TOWARD THE LOWER COLORADO  
BASIN.  
 
AS PWS INCREASE TO 2-3.5 STD DEV ABOVE NORMAL ACROSS MUCH OF THE  
REGION, STRONG UPPER LEVEL DIVERGENCE COMBINED WITH AMPLIFIED  
SOUTHWESTERLY FLOW ORTHOGONAL TO THE TERRAIN WILL SUPPORT  
SIGNIFICANT SYNOPTIC AND OROGRAPHIC FORCING.  
 
A LIMITING FACTOR WILL BE INSTABILITY, HAMPERED BY THICK CLOUD  
COVER AND SHORTENING DAYLIGHT. HOWEVER, THE STRONG FORCING AND  
ANOMALOUS MOISTURE IS LIKELY TO SUPPORT VERY EFFICIENT WARM-RAIN  
PROCESSES THAT WILL COMPENSATE FOR THE LIMITED CAPE.  
 
A BROAD MODERATE RISK REMAINS IN PLACE -- COVERING THE COMPLEX  
TERRAIN AND BURN SCARS OF SOUTHERN UTAH, SOUTHWESTERN COLORADO, AS  
WELL AS MUCH OF NORTHERN AND CENTRAL ARIZONA AND NEW MEXICO. ONE  
SMALLER ADJUSTMENT THIS ISSUANCE WAS TO EXTEND THE MODERATE RISK A  
BIT FARTHER SOUTHEAST INTO THE EXTREMELY VULNERABLE AREAS OF  
SOUTHEASTERN NEW MEXICO, WHERE SOILS REMAIN NEARLY SATURATED FROM  
RECENT ROUNDS OF HEAVY RAIN.  
   
..DAKOTAS/NORTHWESTERN MINNESOTA
 
 
COUPLED UPPER JET FORCING ALONG WITH DEEPENING MOISTURE (PWS ~1.5  
INCHES) ON THE NOSE OF A SOUTHERLY LOW LEVEL JET WILL PROMOTE  
TRAINING SHOWERS AND STORMS ACROSS PORTIONS OF THE EASTERN DAKOTAS  
INTO NORTHWESTERN MINNESOTA. A SLIGHT RISK WAS MAINTAINED FROM  
NORTHEASTERN NORTH DAKOTA INTO NORTHWESTERN MINNESOTA, WHERE  
THERE REMAINS A GOOD MODEL SIGNAL FOR WIDESPREAD TOTALS OF 1-2  
INCHES, WITH LOCALLY HEAVIER TOTALS.  
 
PEREIRA  
 
 
DAY 3  
VALID 12Z TUE SEP 29 2026 - 12Z WED SEP 30 2026  
 
...THERE IS A MODERATE RISK OF EXCESSIVE RAINFALL FROM THE  
SOUTHWEST INTO THE SOUTHERN HIGH PLAINS...  
   
..2030Z UPDATE
 
 
A BIT MORE SIGNIFICANT CHANGES WERE NEEDED WITH THIS UPDATE  
COMPARED TO DAY 2. GUIDANCE IS IN GOOD AGREEMENT ON A NORTH AND  
WESTWARD TREND TO THE RAINFALL ASSOCIATED WITH THE MAIN REMNANTS OF  
EAST PACIFIC HURRICANE POLO. THIS MORE AMPLIFIED PATTERN LED TO  
EXPANSIONS OF THE SLIGHT AND MODERATE RISKS NORTH AND WEST WITH  
THIS UPDATE. FURTHER, A SLOWER EASTWARD PROGRESSION MEANS THE  
FORECAST RAINFALL HAS COME UP A BIT. THUS, THE MODERATE RISK WAS  
EXPANDED NORTH TO INCLUDE MUCH OF SOUTHEASTERN COLORADO IN  
COORDINATION WITH PUB/PUEBLO, CO FORECAST OFFICE. THE SURROUNDING  
SLIGHT WAS ADJUSTED NORTH AND WEST TO INCLUDE MORE OF SOUTHERN  
UTAH, MUCH OF CENTRAL COLORADO, AND ADDITIONAL AREAS OF NEBRASKA  
AND SOUTHEASTERN SOUTH DAKOTA. TO ENSURE THAT THIS DOESN'T FLIP-  
FLOP BACK, THE EASTERN SIDES OF THOSE RISK AREAS WERE LARGELY LEFT  
UNCHANGED.  
 
A HIGHER-END MDT HAS ALSO BEEN ADDED INCLUDING MUCH OF THE  
NORTHEASTERN HALF OF NM, THE SOUTHEASTERN CORNER OF CO, AND THE  
WESTERN OK AND TX PANHANDLES. ALL OF THESE AREAS HAVE SATURATED  
SOILS AND LOWERED FFGS. THE SLIGHT WESTWARD SHIFT IN THE TRACK OF  
THE REMNANTS OF POLO HAVE THE CORRIDOR OF THE HEAVIEST RAINS NOW  
TRACKING UP THE EASTERN HALF OF NM. THIS WILL SPREAD ASSOCIATED  
VERY HEAVY RAINFALL NORTH INTO THE SAN JUANS AND SANGRE DE CRISTO  
RANGES ON THE NM/CO BORDER, WHICH LED TO THE UPGRADES THERE.  
MEANWHILE, HEAVY RAIN ON THE IMMEDIATE EASTERN HALF OF THE CENTER  
OF CIRCULATION WILL KEEP VERY HEAVY RAINFALL ONGOING INTO THE  
OKLAHOMA AND TEXAS PANHANDLES. FOR TOTAL MEAN/AREAL RAINFALL, THE  
PANHANDLES MAY HAVE THE HIGHEST RAIN TOTALS ANYWHERE OUTSIDE  
IMMEDIATE MOUNTAINS ON TUESDAY.  
 
THE NOTABLE WESTWARD SHIFT OF THE BAND OF HEAVIEST RAINFALL ACROSS  
NEBRASKA INCREASED UNCERTAINTY ON IF A MODERATE RISK NEEDED TO BE  
EXPANDED INTO THE CENTRAL PLAINS. WHILE THAT ENTIRE AREA ALSO HAS  
BEEN VERY WET RECENTLY, WITH SURFACE LAYER SOILS ALSO WELL ABOVE  
NORMAL FOR MOISTURE, THE LARGE SHIFT PRECLUDED ANY UPGRADES. SHOULD  
THE GUIDANCE STABILIZE ON WHERE THE HEAVIEST RAINS WILL OCCUR IN  
FUTURE UPDATES, THEN A MDT RISK EXPANSION THERE MAY NEED TO BE  
CONSIDERED.  
 
WEGMAN  
   
..PREVIOUS DISCUSSION
 
 
   
..SOUTHWEST TO THE CENTRAL PLAINS
 
 
WIDESPREAD HEAVY RAIN AND POTENTIAL NUMEROUS INSTANCES OF FLASH  
FLOODING ARE EXPECTED TO CONTINUE ACROSS PORTIONS OF THE SOUTHWEST  
WHILE SPREADING INTO THE SOUTHERN HIGH PLAINS THIS PERIOD. WITH  
SOME LINGERING DIFFERENCES IN THE DETAILS, THE MAJORITY OF THE  
GUIDANCE SHOWS THE REMNANT MID-TO-UPPER LEVEL ENERGY ASSOCIATED  
WITH TROPICAL CYCLONE POLO BECOMING INCORPORATED WITHIN THE UPPER  
TROUGH MOVING ACROSS THE SOUTHWEST. AS THE TROUGH MOVES EAST, THIS  
WILL BRING THE BETTER FORCING AND FOCUS FOR HEAVIER RAINS FARTHER  
SOUTHEAST INTO SOUTHEASTERN ARIZONA AND NEW MEXICO, INCLUDING THE  
EXTREMELY VULNERABLE SOUTHEASTERN PARTS OF NEW MEXICO. AS THE  
TROUGH MOVES AND EAST, A STRONG LOW LEVEL JET IS FORECAST TO  
DEVELOP FROM EASTERN MEXICO TO THE CENTRAL GREAT PLAINS,  
CONTRIBUTING AN ADDITIONAL INFLUX OF DEEP MOISTURE TO PARTS OF THE  
SOUTHERN AND CENTRAL PLAINS. THE OVERNIGHT GUIDANCE GENERALLY  
INDICATED THE HEAVIEST AMOUNTS OF THE PERIOD WILL FOCUS OVER THE  
TEXAS PANHANDLE-NORTHWEST TEXAS REGION AS THIS MOISTURE INTERACTS  
WITH INCREASING ASCENT AFFORDED BY STRONG MID-TO-UPPER LEVEL  
FORCING. THIS EVOLUTION OF EVENTS CONTINUES TO WARRANT A BROAD  
MODERATE RISK THAT WAS MAINTAINED FROM SOUTHEASTERN ARIZONA TO THE  
PANHANDLE REGION.  
 
A SLIGHT RISK WAS ALSO MAINTAINED FARTHER TO THE NORTHEAST ACROSS  
PARTS OF THE CENTRAL PLAINS INTO EASTERN IOWA, WHERE MOISTURE FROM  
THE SOUTH POOLING AHEAD OF A SURFACE-TO-LOW LEVEL COLD FRONT AND  
AHEAD OF THE REMNANT TROPICAL SYSTEM WILL SUPPORT THE GROWING  
POTENTIAL FOR HEAVY RAINFALL.  
 
PEREIRA  
 
 
DAY 4 AND DAY 5  
 
VALID 12Z WED SEP 30 2026 - 12Z FRI OCT 02 2026  
 
...THERE ARE MODERATE RISKS OF EXCESSIVE RAINFALL ACROSS PORTIONS  
OF THE CENTRAL AND SOUTHERN HIGH PLAINS AND SOUTHERN PLAINS...  
 
2000Z UPDATE: CONSIDERABLE, NOTEWORTHY CHANGES WERE MADE TO BOTH  
THE DAYS 4-5 EROS. ON DAY 4, PER COLLABORATION WITH THE WFOS, WE  
INTRODUCED A MODERATE RISK ACROSS SE CO AND FAR NE NM, ALONG WITH  
PORTIONS OF CENTRAL TO NORTH TX INTO SOUTH-CENTRAL OK. THE GUIDANCE  
IS STARTING TO CONVERGE, THOUGH STILL SOME TIMING AND THUS  
LONGITUDINAL (W-E) DIFFERENCES IN TERMS OF THE PLACEMENT OF THE  
HEAVIEST RAINFALL WEDNESDAY AND WEDNESDAY NIGHT. OBVIOUSLY A HIGHLY  
DYNAMICAL SYSTEM WITH THE UPPER LEVEL ENERGY AND MOISTURE PROFILES  
BUOYED FROM POLO'S REMNANTS. WE ARE STILL LEANING MORE TOWARDS THE  
OPERATIONAL ECMWF SOLUTION IN TERMS OF TIMING AND (THUS) EASTWARD  
EXTENT, WHICH IS SLOWER THAN THE MEAN OF THE OTHER OPERATIONAL  
GLOBAL MODELS, BUT MATCHES THE EC AIFS AS WELL AS THE AIGFS FAIRLY  
WELL. STILL THINKING THAT THE INFUSION OF POLO AND RESULTANT  
DEEPENING (AMPLIFYING) UPPER TROUGH WILL TEND TO FAVOR THE SLOWER  
SOLUTIONS. 00Z-BASED ECMWF EFI (EXTREME FORECAST INDEX) IS BEGINNING TO HONE  
IN ON THE EVENT ACROSS THE SOUTHERN PLAINS, WITH SHIFT-OF-TAILS  
NEARING 2 IN SOME SPOTS ACROSS CENTRAL TO NORTH TX.  
 
ON DAY 5 (12Z THU-12Z FRI), THE MORE NOTABLE CHANGE MADE WAS TO  
HOIST A MODERATE RISK ACROSS SOUTH-CENTRAL TX THROUGH NORTH TX AND  
SOUTH-CENTRAL TO SOUTHEAST OK. THERE IS SOME OVERLAP WITH THE DAY 4  
MODERATE, SO CERTAINLY IF THERE IS SOME RETARDATION TO THE FORWARD  
(EASTWARD) PROGRESSION OF THIS SYSTEM, THE CONCERN FOR A HIGHER  
EXCESSIVE RAINFALL THREAT WILL CONTINUE TO GROW. THE LATEST EC AND  
AI GUIDANCE SHOW A FAIRLY PERSISTENT THETA-E/PW AXIS ACROSS THIS  
CORRIDOR (PWS AOA 2.25"), WITH THE CONFLUENCE OF ANOMALOUS MID-  
UPPER LEVEL MOISTURE (SUBTROPICAL CONNECTION, INCLUDING POLO'S  
REMNANT UPPER LEVEL MOISTURE PLUME) AS WELL AS THE UPTICK IN LOW-  
LEVEL MOISTURE TRANSPORT FROM THE WESTERN GULF WITH THE  
STRENGTHENING LLJ (850 MB FLOW +4 TO +5 STANDARD DEVIATIONS ABOVE  
NORMAL) AHEAD OF THE DEEPENING/AMPLIFYING UPPER TROUGH.  
 
HURLEY  
 
PREVIOUS DISCUSSION...  
 
TROPICALLY ENHANCED HEAVY RAINFALL WILL SPREAD FROM  
THE SOUTHWEST, SOUTHERN/CENTRAL PLAINS AND INTO THE MISSISSIPPI  
VALLEY. THE THREAT FOR EXCESSIVE RAINFALL WILL REMAIN ELEVATED  
GIVEN AREAS OF OVERLAPPING HEAVY RAIN FOOTPRINTS FROM PRIOR DAYS.  
LOCATIONS PARTICULARLY SENSITIVE WILL BE DRY WASHES, BURN SCARS,  
SLOT CANYONS, AND AREAS OF HIGHER TERRAIN. WHILE THE GUIDANCE IS  
SLOWLY CONVERGING ON A SOLUTION, THERE IS STILL SPREAD WITH THE  
LOCATION AND (ESPECIALLY) TIMING OF HEAVIEST RAIN AS POLO'S REMNANT  
MOISTURE PLUME BECOMES ABSORBED BY THE DEEPENING SW US UPPER  
TROUGH. TIMING ISSUES ARE MOST NOTABLE BY 12Z WED-12Z THU, WITH  
MOST OF THE 12Z OPERATIONAL GLOBAL MODEL RUNS AND BOTH AIGFS AND EC  
AIFS SLOWER (FARTHER WEST WITH THE HEAVIEST QPF) THAN THE NBM AND  
ENSEMBLE MEAN QPFS. NOT WITHSTANDING THE TIMING UNCERTAINTIES, THE  
ECMWF EFI CONTINUES TO SIGNAL A POTENTIALLY SIGNIFICANT RAINFALL  
EVENT, PARTICULARLY ON TUESDAY ACROSS EASTERN AZ AND WESTERN-  
CENTRAL NM.  
 
A BROAD SLIGHT RISK FOR ARIZONA/TEXAS TO IOWA/ILLINOIS ON  
WEDNESDAY AND FROM TEXAS TO THE ARKANSAS/MISSOURI STATE LINE ON  
THURSDAY. THIS PART OF THE COUNTRY WILL CONTINUE TO BE MONITORED  
FOR QPF/TRACK OF REMNANT ENERGIES TRENDS AS THEY MAY IMPACT FUTURE  
UPGRADES OF THE RISK LEVELS.  
 
CAMPBELL/HURLEY  
 
 
DAY 1 THREAT AREA: HTTPS://WWW.WPC.NCEP.NOAA.GOV/QPF/94EPOINTS.TXT  
DAY 2 THREAT AREA: HTTPS://WWW.WPC.NCEP.NOAA.GOV/QPF/98EPOINTS.TXT  
DAY 3 THREAT AREA: HTTPS://WWW.WPC.NCEP.NOAA.GOV/QPF/99EPOINTS.TXT  
 

 
 
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